sparc (64bit): Regenerate ulps

[thirdparty/glibc.git] / rt / shm_open.c

diff --git a/rt/shm_open.c b/rt/shm_open.c
index 4bd1e51568d3b931e6277d50beff807cb278bdf6..48970bbc816886a5e0cd31af690ea8e480b83f6c 100644 (file)
--- a/rt/shm_open.c
+++ b/rt/shm_open.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+/* shm_open -- open a POSIX shared memory object.  Generic POSIX file version.
+   Copyright (C) 2001-2023 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
@@ -13,16 +14,40 @@
 
    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/>.  */
+   <https://www.gnu.org/licenses/>.  */
 
 #include <errno.h>
-#include <sys/mman.h>
+#include <fcntl.h>
+#include <not-cancel.h>
+#include <pthread.h>
+#include <shlib-compat.h>
+#include <shm-directory.h>
+#include <unistd.h>
 
 /* Open shared memory object.  */
 int
-shm_open (const char *name, int oflag, mode_t mode)
+__shm_open (const char *name, int oflag, mode_t mode)
 {
-  __set_errno (ENOSYS);
-  return -1;
+  struct shmdir_name dirname;
+  if (__shm_get_name (&dirname, name, false) != 0)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  oflag |= O_NOFOLLOW | O_CLOEXEC;
+
+  int fd = __open64_nocancel (dirname.name, oflag, mode);
+  if (fd == -1 && __glibc_unlikely (errno == EISDIR))
+    /* It might be better to fold this error with EINVAL since
+       directory names are just another example for unsuitable shared
+       object names and the standard does not mention EISDIR.  */
+    __set_errno (EINVAL);
+
+  return fd;
 }
-stub_warning (shm_open)
+versioned_symbol (libc, __shm_open, shm_open, GLIBC_2_34);
+
+#if OTHER_SHLIB_COMPAT (librt, GLIBC_2_2, GLIBC_2_34)
+compat_symbol (libc, __shm_open, shm_open, GLIBC_2_2);
+#endif