#!/bin/bash
# Create a patch which backports the support/ subdirectory.
-# Copyright (C) 2017 Free Software Foundation, Inc.
+# Copyright (C) 2017-2018 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
# Makefile for support library, used only at build and test time
-# Copyright (C) 2016-2017 Free Software Foundation, Inc.
+# Copyright (C) 2016-2018 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
check_netent \
delayed_exit \
ignore_stderr \
+ next_to_fault \
oom_error \
resolv_test \
set_fortify_handler \
+ support-xfstat \
support-xstat \
support_become_root \
support_can_chroot \
support_capture_subprocess \
support_capture_subprocess_check \
support_chroot \
+ support_enter_mount_namespace \
support_enter_network_namespace \
support_format_address_family \
support_format_addrinfo \
support_record_failure \
support_run_diff \
support_shared_allocate \
+ support_test_compare_failure \
support_write_file_string \
support_test_main \
support_test_verify_impl \
xfclose \
xfopen \
xfork \
+ xftruncate \
xgetsockname \
xlisten \
+ xlseek \
xmalloc \
xmemstream \
xmkdir \
xpthread_attr_destroy \
xpthread_attr_init \
xpthread_attr_setdetachstate \
- xpthread_attr_setstacksize \
xpthread_attr_setguardsize \
+ xpthread_attr_setstacksize \
xpthread_barrier_destroy \
xpthread_barrier_init \
xpthread_barrier_wait \
xpthread_once \
xpthread_rwlock_init \
xpthread_rwlock_rdlock \
- xpthread_rwlock_wrlock \
xpthread_rwlock_unlock \
+ xpthread_rwlock_wrlock \
xpthread_rwlockattr_init \
xpthread_rwlockattr_setkind_np \
xpthread_sigmask \
xpthread_spin_lock \
xpthread_spin_unlock \
+ xraise \
+ xreadlink \
xrealloc \
xrecvfrom \
xsendto \
xsetsockopt \
+ xsigaction \
+ xsignal \
xsocket \
xstrdup \
+ xstrndup \
+ xsysconf \
+ xunlink \
xwaitpid \
xwrite \
tst-support_capture_subprocess \
tst-support_format_dns_packet \
tst-support_record_failure \
+ tst-test_compare \
+ tst-xreadlink \
ifeq ($(run-built-tests),yes)
tests-special = \
/* Capture output from a subprocess.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Support code for reporting test results.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <support/check.h>
+#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
static void
print_failure (const char *file, int line, const char *format, va_list ap)
{
+ int saved_errno = errno;
printf ("error: %s:%d: ", file, line);
vprintf (format, ap);
puts ("");
+ errno = saved_errno;
}
int
/* Functionality for reporting test results.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
does not support reporting failures from a DSO. */
void support_record_failure (void);
+/* Static assertion, under a common name for both C++ and C11. */
+#ifdef __cplusplus
+# define support_static_assert static_assert
+#else
+# define support_static_assert _Static_assert
+#endif
+
+/* Compare the two integers LEFT and RIGHT and report failure if they
+ are different. */
+#define TEST_COMPARE(left, right) \
+ ({ \
+ /* + applies the integer promotions, for bitfield support. */ \
+ typedef __typeof__ (+ (left)) __left_type; \
+ typedef __typeof__ (+ (right)) __right_type; \
+ __left_type __left_value = (left); \
+ __right_type __right_value = (right); \
+ int __left_is_positive = __left_value > 0; \
+ int __right_is_positive = __right_value > 0; \
+ /* Prevent use with floating-point types. */ \
+ support_static_assert ((__left_type) 1.0 == (__left_type) 1.5, \
+ "left value has floating-point type"); \
+ support_static_assert ((__right_type) 1.0 == (__right_type) 1.5, \
+ "right value has floating-point type"); \
+ /* Prevent accidental use with larger-than-long long types. */ \
+ support_static_assert (sizeof (__left_value) <= sizeof (long long), \
+ "left value fits into long long"); \
+ support_static_assert (sizeof (__right_value) <= sizeof (long long), \
+ "right value fits into long long"); \
+ /* Compare the value. */ \
+ if (__left_value != __right_value \
+ || __left_is_positive != __right_is_positive) \
+ /* Pass the sign for printing the correct value. */ \
+ support_test_compare_failure \
+ (__FILE__, __LINE__, \
+ #left, __left_value, __left_is_positive, sizeof (__left_type), \
+ #right, __right_value, __right_is_positive, sizeof (__right_type)); \
+ })
+
+/* Internal implementation of TEST_COMPARE. LEFT_POSITIVE and
+ RIGHT_POSITIVE are used to store the sign separately, so that both
+ unsigned long long and long long arguments fit into LEFT_VALUE and
+ RIGHT_VALUE, and the function can still print the original value.
+ LEFT_SIZE and RIGHT_SIZE specify the size of the argument in bytes,
+ for hexadecimal formatting. */
+void support_test_compare_failure (const char *file, int line,
+ const char *left_expr,
+ long long left_value,
+ int left_positive,
+ int left_size,
+ const char *right_expr,
+ long long right_value,
+ int right_positive,
+ int right_size);
+
+
/* Internal function called by the test driver. */
int support_report_failure (int status)
__attribute__ ((weak, warn_unused_result));
/* Compare struct addrinfo values against a formatted string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <support/check.h>
#include <support/format_nss.h>
#include <support/run_diff.h>
/* Check that a DNS packet buffer has the expected contents.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <support/check.h>
#include <support/format_nss.h>
#include <support/run_diff.h>
/* Compare struct hostent values against a formatted string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <support/check.h>
#include <support/format_nss.h>
#include <support/run_diff.h>
/* Compare struct netent values against a formatted string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <support/check.h>
#include <support/format_nss.h>
#include <support/run_diff.h>
/* Test verification functions for NSS- and DNS-related data.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Time-triggered process termination.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* String formatting functions for NSS- and DNS-related data.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Avoid all the buffer overflow messages on stderr.
- Copyright (C) 2015-2017 Free Software Foundation, Inc.
+ Copyright (C) 2015-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Entering namespaces for test case isolation.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
has sufficient privileges. */
bool support_enter_network_namespace (void);
+/* Enter a mount namespace and mark / as private (not shared). If
+ this function returns true, mount operations in this process will
+ not affect the host system afterwards. */
+bool support_enter_mount_namespace (void);
+
/* Return true if support_enter_network_namespace managed to enter a
UTS namespace. */
bool support_in_uts_namespace (void);
--- /dev/null
+/* Memory allocation next to an unmapped page.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/next_to_fault.h>
+#include <support/xunistd.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+
+struct support_next_to_fault
+support_next_to_fault_allocate (size_t size)
+{
+ long page_size = sysconf (_SC_PAGE_SIZE);
+ TEST_VERIFY_EXIT (page_size > 0);
+ struct support_next_to_fault result;
+ result.region_size = roundup (size, page_size) + page_size;
+ if (size + page_size <= size || result.region_size <= size)
+ FAIL_EXIT1 ("support_next_to_fault_allocate (%zu): overflow", size);
+ result.region_start
+ = xmmap (NULL, result.region_size, PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS, -1);
+ /* Unmap the page after the allocation. */
+ xmprotect (result.region_start + (result.region_size - page_size),
+ page_size, PROT_NONE);
+ /* Align the allocation within the region so that it ends just
+ before the PROT_NONE page. */
+ result.buffer = result.region_start + result.region_size - page_size - size;
+ result.length = size;
+ return result;
+}
+
+void
+support_next_to_fault_free (struct support_next_to_fault *ntf)
+{
+ xmunmap (ntf->region_start, ntf->region_size);
+ *ntf = (struct support_next_to_fault) { NULL, };
+}
--- /dev/null
+/* Memory allocation next to an unmapped page.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef SUPPORT_NEXT_TO_FAULT_H
+#define SUPPORT_NEXT_TO_FAULT_H
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+/* The memory region created by next_to_fault_allocate. */
+struct support_next_to_fault
+{
+ /* The user data. */
+ char *buffer;
+ size_t length;
+
+ /* The entire allocated region. */
+ void *region_start;
+ size_t region_size;
+};
+
+/* Allocate a buffer of SIZE bytes just before a page which is mapped
+ with PROT_NONE (so that overrunning the buffer will cause a
+ fault). */
+struct support_next_to_fault support_next_to_fault_allocate (size_t size);
+
+/* Deallocate the memory region allocated by
+ next_to_fault_allocate. */
+void support_next_to_fault_free (struct support_next_to_fault *);
+
+#endif /* SUPPORT_NEXT_TO_FAULT_H */
/* Reporting out-of-memory errors.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* DNS test framework and libresolv redirection.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
max_response_length = 65536
};
-/* List of pointers to be freed. The hash table implementation
- (struct hsearch_data) does not provide a way to deallocate all
- objects, so this approach is used to avoid memory leaks. */
-struct to_be_freed
+/* Used for locating domain names containing for the purpose of
+ forming compression references. */
+struct compressed_name
{
- struct to_be_freed *next;
- void *ptr;
+ uint16_t offset;
+ unsigned char length;
+ unsigned char name[]; /* Without terminating NUL. */
};
+static struct compressed_name *
+allocate_compressed_name (const unsigned char *encoded, unsigned int offset)
+{
+ /* Compute the length of the domain name. */
+ size_t length;
+ {
+ const unsigned char *p;
+ for (p = encoded; *p != '\0';)
+ {
+ /* No compression references are allowed. */
+ TEST_VERIFY (*p <= 63);
+ /* Skip over the label. */
+ p += 1 + *p;
+ }
+ length = p - encoded;
+ ++length; /* For the terminating NUL byte. */
+ }
+ TEST_VERIFY_EXIT (length <= 255);
+
+ struct compressed_name *result
+ = xmalloc (offsetof (struct compressed_name, name) + length);
+ result->offset = offset;
+ result->length = length;
+ memcpy (result->name, encoded, length);
+ return result;
+}
+
+/* Convert CH to lower case. Only change letters in the ASCII
+ range. */
+static inline unsigned char
+ascii_tolower (unsigned char ch)
+{
+ if ('A' <= ch && ch <= 'Z')
+ return ch - 'A' + 'a';
+ else
+ return ch;
+}
+
+/* Compare both names, for use with tsearch. The order is arbitrary,
+ but the comparison is case-insenstive. */
+static int
+compare_compressed_name (const void *left, const void *right)
+{
+ const struct compressed_name *crleft = left;
+ const struct compressed_name *crright = right;
+
+ if (crleft->length != crright->length)
+ /* The operands are converted to int before the subtraction. */
+ return crleft->length - crright->length;
+
+ const unsigned char *nameleft = crleft->name;
+ const unsigned char *nameright = crright->name;
+
+ while (true)
+ {
+ int lenleft = *nameleft++;
+ int lenright = *nameright++;
+
+ /* Labels must not e compression references. */
+ TEST_VERIFY (lenleft <= 63);
+ TEST_VERIFY (lenright <= 63);
+
+ if (lenleft != lenright)
+ return left - right;
+ if (lenleft == 0)
+ /* End of name reached without spotting a difference. */
+ return 0;
+ /* Compare the label in a case-insenstive manner. */
+ const unsigned char *endnameleft = nameleft + lenleft;
+ while (nameleft < endnameleft)
+ {
+ int l = *nameleft++;
+ int r = *nameright++;
+ if (l != r)
+ {
+ l = ascii_tolower (l);
+ r = ascii_tolower (r);
+ if (l != r)
+ return l - r;
+ }
+ }
+ }
+}
+
struct resolv_response_builder
{
const unsigned char *query_buffer;
written RDATA sub-structure. 0 if no RDATA is being written. */
size_t current_rdata_offset;
- /* Hash table for locating targets for label compression. */
- struct hsearch_data compression_offsets;
- /* List of pointers which need to be freed. Used for domain names
- involved in label compression. */
- struct to_be_freed *to_be_freed;
+ /* tsearch tree for locating targets for label compression. */
+ void *compression_offsets;
/* Must be last. Not zeroed for performance reasons. */
unsigned char buffer[max_response_length];
/* Response builder. */
-/* Add a pointer to the list of pointers to be freed when B is
- deallocated. */
-static void
-response_push_pointer_to_free (struct resolv_response_builder *b, void *ptr)
-{
- if (ptr == NULL)
- return;
- struct to_be_freed *e = xmalloc (sizeof (*e));
- *e = (struct to_be_freed) {b->to_be_freed, ptr};
- b->to_be_freed = e;
-}
-
void
resolv_response_init (struct resolv_response_builder *b,
struct resolv_response_flags flags)
resolv_response_add_name (struct resolv_response_builder *b,
const char *const origname)
{
- /* Normalized name. */
- char *name;
- /* Normalized name with case preserved. */
- char *name_case;
- {
- size_t namelen = strlen (origname);
- /* Remove trailing dots. FIXME: Handle trailing quoted dots. */
- while (namelen > 0 && origname[namelen - 1] == '.')
- --namelen;
- name = xmalloc (namelen + 1);
- name_case = xmalloc (namelen + 1);
- /* Copy and convert to lowercase. FIXME: This needs to normalize
- escaping as well. */
- for (size_t i = 0; i < namelen; ++i)
- {
- char ch = origname[i];
- name_case[i] = ch;
- if ('A' <= ch && ch <= 'Z')
- ch = ch - 'A' + 'a';
- name[i] = ch;
- }
- name[namelen] = 0;
- name_case[namelen] = 0;
- }
- char *name_start = name;
- char *name_case_start = name_case;
+ unsigned char encoded_name[NS_MAXDNAME];
+ if (ns_name_pton (origname, encoded_name, sizeof (encoded_name)) < 0)
+ FAIL_EXIT1 ("ns_name_pton (\"%s\"): %m", origname);
- bool compression = false;
- while (*name)
+ /* Copy the encoded name into the output buffer, apply compression
+ where possible. */
+ for (const unsigned char *name = encoded_name; ;)
{
- /* Search for a previous name we can reference. */
- ENTRY new_entry =
+ if (*name == '\0')
{
- .key = name,
- .data = (void *) (uintptr_t) b->offset,
- };
+ /* We have reached the end of the name. Add the terminating
+ NUL byte. */
+ response_add_byte (b, '\0');
+ break;
+ }
- /* If the label can be a compression target because it is at a
- reachable offset, add it to the hash table. */
- ACTION action;
- if (b->offset < (1 << 12))
- action = ENTER;
- else
- action = FIND;
+ /* Set to the compression target if compression is possible. */
+ struct compressed_name *crname_target;
- /* Search for known compression offsets in the hash table. */
- ENTRY *e;
- if (hsearch_r (new_entry, action, &e, &b->compression_offsets) == 0)
- {
- if (action == FIND && errno == ESRCH)
- /* Fall through. */
- e = NULL;
- else
- FAIL_EXIT1 ("hsearch_r failure in name compression: %m");
- }
+ /* Compression references can only reach the beginning of the
+ packet. */
+ enum { compression_limit = 1 << 12 };
+
+ {
+ /* The trailing part of the name to be looked up in the tree
+ with the compression targets. */
+ struct compressed_name *crname
+ = allocate_compressed_name (name, b->offset);
+
+ if (b->offset < compression_limit)
+ {
+ /* Add the name to the tree, for future compression
+ references. */
+ void **ptr = tsearch (crname, &b->compression_offsets,
+ compare_compressed_name);
+ if (ptr == NULL)
+ FAIL_EXIT1 ("tsearch out of memory");
+ crname_target = *ptr;
+
+ if (crname_target != crname)
+ /* The new name was not actually added to the tree.
+ Deallocate it. */
+ free (crname);
+ else
+ /* Signal that the tree did not yet contain the name,
+ but keep the allocation because it is now part of the
+ tree. */
+ crname_target = NULL;
+ }
+ else
+ {
+ /* This name cannot be reached by a compression reference.
+ No need to add it to the tree for future reference. */
+ void **ptr = tfind (crname, &b->compression_offsets,
+ compare_compressed_name);
+ if (ptr != NULL)
+ crname_target = *ptr;
+ else
+ crname_target = NULL;
+ TEST_VERIFY (crname_target != crname);
+ /* Not added to the tree. */
+ free (crname);
+ }
+ }
- /* The name is known. Reference the previous location. */
- if (e != NULL && e->data != new_entry.data)
+ if (crname_target != NULL)
{
- size_t old_offset = (uintptr_t) e->data;
+ /* The name is known. Reference the previous location. */
+ unsigned int old_offset = crname_target->offset;
+ TEST_VERIFY_EXIT (old_offset < compression_limit);
response_add_byte (b, 0xC0 | (old_offset >> 8));
response_add_byte (b, old_offset);
- compression = true;
break;
}
-
- /* The name does not exist yet. Write one label. First, add
- room for the label length. */
- size_t buffer_label_offset = b->offset;
- response_add_byte (b, 0);
-
- /* Copy the label. */
- while (true)
+ else
{
- char ch = *name_case;
- if (ch == '\0')
- break;
- ++name;
- ++name_case;
- if (ch == '.')
- break;
- /* FIXME: Handle escaping. */
- response_add_byte (b, ch);
+ /* The name is new. Add this label. */
+ unsigned int len = 1 + *name;
+ resolv_response_add_data (b, name, len);
+ name += len;
}
-
- /* Patch in the label length. */
- size_t label_length = b->offset - buffer_label_offset - 1;
- if (label_length == 0)
- FAIL_EXIT1 ("empty label in name compression: %s", origname);
- if (label_length > 63)
- FAIL_EXIT1 ("label too long in name compression: %s", origname);
- b->buffer[buffer_label_offset] = label_length;
-
- /* Continue with the tail of the name and the next label. */
- }
-
- if (compression)
- {
- /* If we found an immediate match for the name, we have not put
- it into the hash table, and can free it immediately. */
- if (name == name_start)
- free (name_start);
- else
- response_push_pointer_to_free (b, name_start);
- }
- else
- {
- /* Terminate the sequence of labels. With compression, this is
- implicit in the compression reference. */
- response_add_byte (b, 0);
- response_push_pointer_to_free (b, name_start);
}
-
- free (name_case_start);
}
void
memset (b, 0, offsetof (struct resolv_response_builder, buffer));
b->query_buffer = query_buffer;
b->query_length = query_length;
- TEST_VERIFY_EXIT (hcreate_r (10000, &b->compression_offsets) != 0);
return b;
}
static void
response_builder_free (struct resolv_response_builder *b)
{
- struct to_be_freed *current = b->to_be_freed;
- while (current != NULL)
- {
- struct to_be_freed *next = current->next;
- free (current->ptr);
- free (current);
- current = next;
- }
- hdestroy_r (&b->compression_offsets);
+ tdestroy (b->compression_offsets, free);
free (b);
}
/* DNS test framework and libresolv redirection.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Invoke the system diff tool to compare two strings.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Set signal handler for use in fortify tests.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* fstat64 with error checking.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+#include <sys/stat.h>
+
+void
+xfstat (int fd, struct stat64 *result)
+{
+ if (fstat64 (fd, result) != 0)
+ FAIL_EXIT1 ("fstat64 (%d): %m", fd);
+}
/* stat64 with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Common extra functions.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
char *xasprintf (const char *format, ...)
__attribute__ ((format (printf, 1, 2), malloc));
char *xstrdup (const char *);
+char *xstrndup (const char *, size_t);
__END_DECLS
/* Acquire root privileges.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <support/namespace.h>
+#include <errno.h>
+#include <fcntl.h>
#include <sched.h>
#include <stdio.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/xunistd.h>
#include <unistd.h>
+#ifdef CLONE_NEWUSER
+/* The necessary steps to allow file creation in user namespaces. */
+static void
+setup_uid_gid_mapping (uid_t original_uid, gid_t original_gid)
+{
+ int fd = open64 ("/proc/self/uid_map", O_WRONLY);
+ if (fd < 0)
+ {
+ printf ("warning: could not open /proc/self/uid_map: %m\n"
+ "warning: file creation may not be possible\n");
+ return;
+ }
+
+ /* We map our original UID to the same UID in the container so we
+ own our own files normally. Without that, file creation could
+ fail with EOVERFLOW (sic!). */
+ char buf[100];
+ int ret = snprintf (buf, sizeof (buf), "%llu %llu 1\n",
+ (unsigned long long) original_uid,
+ (unsigned long long) original_uid);
+ TEST_VERIFY_EXIT (ret < sizeof (buf));
+ xwrite (fd, buf, ret);
+ xclose (fd);
+
+ /* Linux 3.19 introduced the setgroups file. We need write "deny" to this
+ file otherwise writing to gid_map will fail with EPERM. */
+ fd = open64 ("/proc/self/setgroups", O_WRONLY, 0);
+ if (fd < 0)
+ {
+ if (errno != ENOENT)
+ FAIL_EXIT1 ("open64 (\"/proc/self/setgroups\", 0x%x, 0%o): %m",
+ O_WRONLY, 0);
+ /* This kernel doesn't expose the setgroups file so simply move on. */
+ }
+ else
+ {
+ xwrite (fd, "deny\n", strlen ("deny\n"));
+ xclose (fd);
+ }
+
+ /* Now map our own GID, like we did for the user ID. */
+ fd = xopen ("/proc/self/gid_map", O_WRONLY, 0);
+ ret = snprintf (buf, sizeof (buf), "%llu %llu 1\n",
+ (unsigned long long) original_gid,
+ (unsigned long long) original_gid);
+ TEST_VERIFY_EXIT (ret < sizeof (buf));
+ xwrite (fd, buf, ret);
+ xclose (fd);
+}
+#endif /* CLONE_NEWUSER */
+
bool
support_become_root (void)
{
#ifdef CLONE_NEWUSER
+ uid_t original_uid = getuid ();
+ gid_t original_gid = getgid ();
+
if (unshare (CLONE_NEWUSER | CLONE_NEWNS) == 0)
- /* Even if we do not have UID zero, we have extended privileges at
- this point. */
- return true;
+ {
+ setup_uid_gid_mapping (original_uid, original_gid);
+ /* Even if we do not have UID zero, we have extended privileges at
+ this point. */
+ return true;
+ }
#endif
if (setuid (0) != 0)
{
/* Return true if the process can perform a chroot operation.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <support/check.h>
#include <support/namespace.h>
#include <support/support.h>
+#include <support/xunistd.h>
#include <sys/stat.h>
#include <unistd.h>
-#include <xunistd.h>
static void
callback (void *closure)
/* Capture output from a subprocess.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Verify capture output from a subprocess.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Setup a chroot environment for use within tests.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
support_chroot_create (struct support_chroot_configuration conf)
{
struct support_chroot *chroot = xmalloc (sizeof (*chroot));
-
- chroot->path_chroot = xasprintf ("%s/tst-resolv-res_init-XXXXXX", test_dir);
- if (mkdtemp (chroot->path_chroot) == NULL)
- FAIL_EXIT1 ("mkdtemp (\"%s\"): %m", chroot->path_chroot);
- add_temp_file (chroot->path_chroot);
+ chroot->path_chroot = support_create_temp_directory ("tst-resolv-res_init-");
/* Create the /etc directory in the chroot environment. */
char *path_etc = xasprintf ("%s/etc", chroot->path_chroot);
--- /dev/null
+/* Enter a mount namespace.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/namespace.h>
+
+#include <sched.h>
+#include <stdio.h>
+#ifdef CLONE_NEWNS
+# include <sys/mount.h>
+#endif /* CLONE_NEWNS */
+
+bool
+support_enter_mount_namespace (void)
+{
+#ifdef CLONE_NEWNS
+ if (unshare (CLONE_NEWNS) == 0)
+ {
+ /* On some systems, / is marked as MS_SHARED, which means that
+ mounts within the namespace leak to the rest of the system,
+ which is not what we want. */
+ if (mount ("none", "/", NULL, MS_REC | MS_PRIVATE, NULL) != 0)
+ {
+ printf ("warning: making the mount namespace private failed: %m\n");
+ return false;
+ }
+ return true;
+ }
+ else
+ printf ("warning: unshare (CLONE_NEWNS) failed: %m\n");
+#endif /* CLONE_NEWNS */
+ return false;
+}
/* Enter a network namespace.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Convert an address family to a string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Convert struct addrinfo values to a string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <arpa/inet.h>
#include <errno.h>
#include <stdio.h>
+#include <stdlib.h>
#include <support/support.h>
#include <support/xmemstream.h>
/* Convert a DNS packet to a human-readable representation.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <arpa/inet.h>
#include <resolv.h>
+#include <stdbool.h>
#include <support/check.h>
#include <support/support.h>
#include <support/xmemstream.h>
/* Convert a h_errno error code to a string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Convert a struct hostent object to a string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <arpa/inet.h>
#include <errno.h>
#include <stdio.h>
+#include <stdlib.h>
#include <support/support.h>
#include <support/xmemstream.h>
/* Convert a struct netent object to a string.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <arpa/inet.h>
#include <stdio.h>
+#include <stdlib.h>
#include <support/support.h>
#include <support/xmemstream.h>
/* Run a function in a subprocess.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Global test failure counter.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Invoke the system diff tool to compare two strings.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Allocate a memory region shared across processes.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* Reporting a numeric comparison failure.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <stdio.h>
+#include <support/check.h>
+
+static void
+report (const char *which, const char *expr, long long value, int positive,
+ int size)
+{
+ printf (" %s: ", which);
+ if (positive)
+ printf ("%llu", (unsigned long long) value);
+ else
+ printf ("%lld", value);
+ unsigned long long mask
+ = (~0ULL) >> (8 * (sizeof (unsigned long long) - size));
+ printf (" (0x%llx); from: %s\n", (unsigned long long) value & mask, expr);
+}
+
+void
+support_test_compare_failure (const char *file, int line,
+ const char *left_expr,
+ long long left_value,
+ int left_positive,
+ int left_size,
+ const char *right_expr,
+ long long right_value,
+ int right_positive,
+ int right_size)
+{
+ int saved_errno = errno;
+ support_record_failure ();
+ if (left_size != right_size)
+ printf ("%s:%d: numeric comparison failure (widths %d and %d)\n",
+ file, line, left_size * 8, right_size * 8);
+ else
+ printf ("%s:%d: numeric comparison failure\n", file, line);
+ report (" left", left_expr, left_value, left_positive, left_size);
+ report ("right", right_expr, right_value, right_positive, right_size);
+ errno = saved_errno;
+}
/* Main worker function for the test driver.
- Copyright (C) 1998-2017 Free Software Foundation, Inc.
+ Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Implementation of the TEST_VERIFY and TEST_VERIFY_EXIT macros.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <support/check.h>
+#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
void
support_test_verify_impl (const char *file, int line, const char *expr)
{
+ int saved_errno = errno;
support_record_failure ();
printf ("error: %s:%d: not true: %s\n", file, line, expr);
+ errno = saved_errno;
}
void
/* Write a string to a file.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <fcntl.h>
#include <string.h>
#include <support/check.h>
-#include <xunistd.h>
+#include <support/xunistd.h>
void
support_write_file_string (const char *path, const char *contents)
/* Internal weak declarations for temporary file handling.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Temporary file handling for tests.
- Copyright (C) 1998-2017 Free Software Foundation, Inc.
+ Copyright (C) 1998-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
return fd;
}
+char *
+support_create_temp_directory (const char *base)
+{
+ char *path = xasprintf ("%s/%sXXXXXX", test_dir, base);
+ if (mkdtemp (path) == NULL)
+ {
+ printf ("error: mkdtemp (\"%s\"): %m", path);
+ exit (1);
+ }
+ add_temp_file (path);
+ return path;
+}
+
/* Helper functions called by the test skeleton follow. */
void
/* Declarations for temporary file handling.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
*FILENAME. */
int create_temp_file (const char *base, char **filename);
+/* Create a temporary directory and schedule it for deletion. BASE is
+ used as a prefix for the unique directory name, which the function
+ returns. The caller should free this string. */
+char *support_create_temp_directory (const char *base);
+
__END_DECLS
#endif /* SUPPORT_TEMP_FILE_H */
/* Main function for test programs.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Interfaces for the test driver.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Test entering namespaces.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Test capturing output from a subprocess.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Tests for the support_format_dns_packet function.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#!/bin/sh
# Test failure recording (with and without --direct).
-# Copyright (C) 2016-2017 Free Software Foundation, Inc.
+# Copyright (C) 2016-2018 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
/* Test support_record_failure state sharing.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* Basic test for the TEST_COMPARE macro.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <string.h>
+#include <support/check.h>
+#include <support/capture_subprocess.h>
+
+static void
+subprocess (void *closure)
+{
+ char ch = 1;
+ /* These tests should fail. */
+ TEST_COMPARE (ch, -1); /* Line 28. */
+ TEST_COMPARE (2LL, -2LL); /* Line 29. */
+ TEST_COMPARE (3LL, (short) -3); /* Line 30. */
+}
+
+struct bitfield
+{
+ int i2 : 2;
+ int i3 : 3;
+ unsigned int u2 : 2;
+ unsigned int u3 : 3;
+ int i31 : 31;
+ unsigned int u31 : 31 ;
+ long long int i63 : 63;
+ unsigned long long int u63 : 63;
+};
+
+/* Functions which return signed sizes are common, so test that these
+ results can readily checked using TEST_COMPARE. */
+
+static int
+return_ssize_t (void)
+{
+ return 4;
+}
+
+static int
+return_int (void)
+{
+ return 4;
+}
+
+
+static int
+do_test (void)
+{
+ /* This should succeed. */
+ TEST_COMPARE (1, 1);
+ TEST_COMPARE (2LL, 2U);
+ {
+ char i8 = 3;
+ unsigned short u16 = 3;
+ TEST_COMPARE (i8, u16);
+ }
+ TEST_COMPARE (return_ssize_t (), sizeof (char[4]));
+ TEST_COMPARE (return_int (), sizeof (char[4]));
+
+ struct bitfield bitfield = { 0 };
+ TEST_COMPARE (bitfield.i2, bitfield.i3);
+ TEST_COMPARE (bitfield.u2, bitfield.u3);
+ TEST_COMPARE (bitfield.u2, bitfield.i3);
+ TEST_COMPARE (bitfield.u3, bitfield.i3);
+ TEST_COMPARE (bitfield.i2, bitfield.u3);
+ TEST_COMPARE (bitfield.i3, bitfield.u2);
+ TEST_COMPARE (bitfield.i63, bitfield.i63);
+ TEST_COMPARE (bitfield.u63, bitfield.u63);
+ TEST_COMPARE (bitfield.i31, bitfield.i63);
+ TEST_COMPARE (bitfield.i63, bitfield.i31);
+
+ struct support_capture_subprocess proc = support_capture_subprocess
+ (&subprocess, NULL);
+
+ /* Discard the reported error. */
+ support_record_failure_reset ();
+
+ puts ("info: *** subprocess output starts ***");
+ fputs (proc.out.buffer, stdout);
+ puts ("info: *** subprocess output ends ***");
+
+ TEST_VERIFY
+ (strcmp (proc.out.buffer,
+ "tst-test_compare.c:28: numeric comparison failure\n"
+ " left: 1 (0x1); from: ch\n"
+ " right: -1 (0xffffffff); from: -1\n"
+ "tst-test_compare.c:29: numeric comparison failure\n"
+ " left: 2 (0x2); from: 2LL\n"
+ " right: -2 (0xfffffffffffffffe); from: -2LL\n"
+ "tst-test_compare.c:30: numeric comparison failure"
+ " (widths 64 and 32)\n"
+ " left: 3 (0x3); from: 3LL\n"
+ " right: -3 (0xfffffffd); from: (short) -3\n") == 0);
+
+ /* Check that there is no output on standard error. */
+ support_capture_subprocess_check (&proc, "TEST_COMPARE", 0, sc_allow_stdout);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
--- /dev/null
+/* Test the xreadlink function.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <support/temp_file.h>
+#include <support/xunistd.h>
+
+static int
+do_test (void)
+{
+ char *dir = support_create_temp_directory ("tst-xreadlink-");
+ char *symlink_name = xasprintf ("%s/symlink", dir);
+ add_temp_file (symlink_name);
+
+ /* The limit 10000 is arbitrary and simply there to prevent an
+ attempt to exhaust all available disk space. */
+ for (int size = 1; size < 10000; ++size)
+ {
+ char *contents = xmalloc (size + 1);
+ for (int i = 0; i < size; ++i)
+ contents[i] = 'a' + (rand () % 26);
+ contents[size] = '\0';
+ if (symlink (contents, symlink_name) != 0)
+ {
+ if (errno == ENAMETOOLONG)
+ {
+ printf ("info: ENAMETOOLONG failure at %d bytes\n", size);
+ free (contents);
+ break;
+ }
+ FAIL_EXIT1 ("symlink (%d bytes): %m", size);
+ }
+
+ char *readlink_result = xreadlink (symlink_name);
+ TEST_VERIFY (strcmp (readlink_result, contents) == 0);
+ free (readlink_result);
+ xunlink (symlink_name);
+ free (contents);
+ }
+
+ /* Create an empty file to suppress the temporary file deletion
+ warning. */
+ xclose (xopen (symlink_name, O_WRONLY | O_CREAT, 0));
+
+ free (symlink_name);
+ free (dir);
+
+ return 0;
+}
+
+#include <support/test-driver.c>
/* Write a message to standard output.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <support/support.h>
+#include <errno.h>
#include <string.h>
#include <unistd.h>
void
write_message (const char *message)
{
+ int saved_errno = errno;
ssize_t unused __attribute__ ((unused));
unused = write (STDOUT_FILENO, message, strlen (message));
+ errno = saved_errno;
}
/* accept with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* accept4 with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Error-checking wrapper for asprintf.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* bind with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Error-checking wrapper for calloc.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* chroot with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* close with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* connect with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Support functionality for using dlopen/dlclose/dlsym.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
+#include <stddef.h>
#include <support/check.h>
#include <support/xdlfcn.h>
/* Support functionality for using dlopen/dlclose/dlsym.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* dup2 with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* fclose with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* fopen with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* fork with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* ftruncate with error checking.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+
+void
+xftruncate (int fd, long long length)
+{
+ if (ftruncate64 (fd, length) != 0)
+ FAIL_EXIT1 ("ftruncate64 (%d, %lld): %m", fd, length);
+}
/* getsockname with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* listen with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* lseek with error checking.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+
+long long
+xlseek (int fd, long long offset, int whence)
+{
+ long long result = lseek64 (fd, offset, whence);
+ if (result < 0)
+ FAIL_EXIT1 ("lseek64 (%d, %lld, %d): %m", fd, offset, whence);
+ return result;
+}
/* Error-checking wrapper for malloc.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Error-checking wrappers for memstream functions.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Error-checking wrappers for memstream functions.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* mkdir with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* mmap with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* mprotect with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* munmap with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* open64 with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pipe with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* poll with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_attr_destroy with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_attr_init with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_attr_setdetachstate with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_attr_setguardsize with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_attr_setstacksize with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_barrier_destroy with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_barrier_init with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_barrier_wait with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_cancel with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Return value checking for pthread functions, exit variant.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_cond_wait with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_create with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_detach with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_join with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutex_consistent with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutex_destroy with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutex_init with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutex_lock with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutex_unlock with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutexattr_destroy with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutexattr_init with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutexattr_setprotocol with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutexattr_setpshared with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutexattr_setrobust with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_mutexattr_settype with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_once with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_rwlock_init with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_rwlock_rdlock with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_rwlock_unlock with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_rwlock_wrlock with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_rwlockattr_init with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_rwlockattr_setkind_np with error checking.
- Copyright (C) 2017 Free Software Foundation, Inc.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_sigmask with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_spin_lock with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* pthread_spin_unlock with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* Error-checking wrapper for raise.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xsignal.h>
+
+void
+xraise (int sig)
+{
+ if (raise (sig) != 0)
+ FAIL_EXIT1 ("raise (%d): %m" , sig);
+}
--- /dev/null
+/* Error-checking, allocating wrapper for readlink.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <scratch_buffer.h>
+#include <support/check.h>
+#include <support/support.h>
+#include <xunistd.h>
+
+char *
+xreadlink (const char *path)
+{
+ struct scratch_buffer buf;
+ scratch_buffer_init (&buf);
+
+ while (true)
+ {
+ ssize_t count = readlink (path, buf.data, buf.length);
+ if (count < 0)
+ FAIL_EXIT1 ("readlink (\"%s\"): %m", path);
+ if (count < buf.length)
+ {
+ char *result = xstrndup (buf.data, count);
+ scratch_buffer_free (&buf);
+ return result;
+ }
+ if (!scratch_buffer_grow (&buf))
+ FAIL_EXIT1 ("scratch_buffer_grow in xreadlink");
+ }
+}
/* Error-checking wrapper for realloc.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* recvfrom with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* sendto with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* setsockopt with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* Error-checking wrapper for sigaction.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xsignal.h>
+
+void
+xsigaction (int sig, const struct sigaction *newact, struct sigaction *oldact)
+{
+ if (sigaction (sig, newact, oldact))
+ FAIL_EXIT1 ("sigaction (%d): %m" , sig);
+}
--- /dev/null
+/* Error-checking wrapper for signal.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xsignal.h>
+
+sighandler_t
+xsignal (int sig, sighandler_t handler)
+{
+ sighandler_t result = signal (sig, handler);
+ if (result == SIG_ERR)
+ FAIL_EXIT1 ("signal (%d, %p): %m", sig, handler);
+ return result;
+}
/* Support functionality for using signals.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
__BEGIN_DECLS
+/* The following functions call the corresponding libc functions and
+ terminate the process on error. */
+
+void xraise (int sig);
+sighandler_t xsignal (int sig, sighandler_t handler);
+void xsigaction (int sig, const struct sigaction *newact,
+ struct sigaction *oldact);
+
/* The following functions call the corresponding libpthread functions
and terminate the process on error. */
/* socket with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Error-checking wrappers for socket functions.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* Error-checking wrappers for stdio functions.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* strdup with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
--- /dev/null
+/* strndup with error checking.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/support.h>
+
+#include <string.h>
+
+char *
+xstrndup (const char *s, size_t length)
+{
+ char *p = strndup (s, length);
+ if (p == NULL)
+ oom_error ("strndup", length);
+ return p;
+}
--- /dev/null
+/* Error-checking wrapper for sysconf.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <support/check.h>
+#include <support/xunistd.h>
+
+long
+xsysconf (int name)
+{
+ /* Detect errors by a changed errno value, in case -1 is a valid
+ value. Make sure that the caller does not see the zero value for
+ errno. */
+ int old_errno = errno;
+ errno = 0;
+ long result = sysconf (name);
+ if (errno != 0)
+ FAIL_EXIT1 ("sysconf (%d): %m", name);
+ errno = old_errno;
+ return result;
+}
/* Support functionality for using threads.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* POSIX-specific extra functions.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
void xdup2 (int, int);
int xopen (const char *path, int flags, mode_t);
void xstat (const char *path, struct stat64 *);
+void xfstat (int fd, struct stat64 *);
void xmkdir (const char *path, mode_t);
void xchroot (const char *path);
+void xunlink (const char *path);
+long xsysconf (int name);
+long long xlseek (int fd, long long offset, int whence);
+void xftruncate (int fd, long long length);
+
+/* Read the link at PATH. The caller should free the returned string
+ with free. */
+char *xreadlink (const char *path);
/* Close the file descriptor. Ignore EINTR errors, but terminate the
process on other errors. */
--- /dev/null
+/* Error-checking wrapper for unlink.
+ Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <support/check.h>
+#include <support/xunistd.h>
+
+void
+xunlink (const char *path)
+{
+ if (unlink (path) != 0)
+ FAIL_EXIT1 ("unlink (\"%s\"): %m", path);
+}
/* waitpid with error checking.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
/* write with error checking and retries.
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
projects / thirdparty / glibc.git / commitdiff
