[thirdparty/glibc.git] / posix / tst-spawn.c

/* Tests for spawn.
   Copyright (C) 2000-2017 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.

   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 <error.h>
#include <fcntl.h>
#include <spawn.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wait.h>
#include <sys/param.h>


/* Nonzero if the program gets called via `exec'.  */
static int restart;


#define CMDLINE_OPTIONS \
  { "restart", no_argument, &restart, 1 },

/* Prototype for our test function.  */
extern void do_prepare (int argc, char *argv[]);
extern int do_test (int argc, char *argv[]);

/* We have a preparation function.  */
#define PREPARE do_prepare

#include "../test-skeleton.c"


/* Name of the temporary files.  */
static char *name1;
static char *name2;
static char *name3;

/* Descriptors for the temporary files.  */
static int temp_fd1 = -1;
static int temp_fd2 = -1;
static int temp_fd3 = -1;

/* The contents of our files.  */
static const char fd1string[] = "This file should get closed";
static const char fd2string[] = "This file should stay opened";
static const char fd3string[] = "This file will be opened";


/* We have a preparation function.  */
void
do_prepare (int argc, char *argv[])
{
  /* We must not open any files in the restart case.  */
  if (restart)
    return;

  temp_fd1 = create_temp_file ("spawn", &name1);
  temp_fd2 = create_temp_file ("spawn", &name2);
  temp_fd3 = create_temp_file ("spawn", &name3);
  if (temp_fd1 < 0 || temp_fd2 < 0 || temp_fd3 < 0)
    exit (1);
}


static int
handle_restart (const char *fd1s, const char *fd2s, const char *fd3s,
		const char *fd4s, const char *name)
{
  char buf[100];
  int fd1;
  int fd2;
  int fd3;
  int fd4;

  /* First get the descriptors.  */
  fd1 = atol (fd1s);
  fd2 = atol (fd2s);
  fd3 = atol (fd3s);
  fd4 = atol (fd4s);

  /* Sanity check.  */
  if (fd1 == fd2)
    error (EXIT_FAILURE, 0, "value of fd1 and fd2 is the same");
  if (fd1 == fd3)
    error (EXIT_FAILURE, 0, "value of fd1 and fd3 is the same");
  if (fd1 == fd4)
    error (EXIT_FAILURE, 0, "value of fd1 and fd4 is the same");
  if (fd2 == fd3)
    error (EXIT_FAILURE, 0, "value of fd2 and fd3 is the same");
  if (fd2 == fd4)
    error (EXIT_FAILURE, 0, "value of fd2 and fd4 is the same");
  if (fd3 == fd4)
    error (EXIT_FAILURE, 0, "value of fd3 and fd4 is the same");

  /* First the easy part: read from the file descriptor which is
     supposed to be open.  */
  if (lseek (fd2, 0, SEEK_CUR) != strlen (fd2string))
    error (EXIT_FAILURE, errno, "file 2 not in right position");
  /* The duped descriptor must have the same position.  */
  if (lseek (fd4, 0, SEEK_CUR) != strlen (fd2string))
    error (EXIT_FAILURE, errno, "file 4 not in right position");
  if (lseek (fd2, 0, SEEK_SET) != 0)
    error (EXIT_FAILURE, 0, "cannot reset position in file 2");
  if (lseek (fd4, 0, SEEK_CUR) != 0)
    error (EXIT_FAILURE, errno, "file 4 not set back, too");
  if (read (fd2, buf, sizeof buf) != strlen (fd2string))
    error (EXIT_FAILURE, 0, "cannot read file 2");
  if (memcmp (fd2string, buf, strlen (fd2string)) != 0)
    error (EXIT_FAILURE, 0, "file 2 does not match");

  /* Now read from the third file.  */
  if (read (fd3, buf, sizeof buf) != strlen (fd3string))
    error (EXIT_FAILURE, 0, "cannot read file 3");
  if (memcmp (fd3string, buf, strlen (fd3string)) != 0)
    error (EXIT_FAILURE, 0, "file 3 does not match");
  /* Try to write to the file.  This should not be allowed.  */
  if (write (fd3, "boo!", 4) != -1 || errno != EBADF)
    error (EXIT_FAILURE, 0, "file 3 is writable");

  /* Now try to read the first file.  First make sure it is not opened.  */
  if (lseek (fd1, 0, SEEK_CUR) != (off_t) -1 || errno != EBADF)
    error (EXIT_FAILURE, 0, "file 1 (%d) is not closed", fd1);

  /* Now open the file and read it.  */
  fd1 = open (name, O_RDONLY);
  if (fd1 == -1)
    error (EXIT_FAILURE, errno,
	   "cannot open first file \"%s\" for verification", name);

  if (read (fd1, buf, sizeof buf) != strlen (fd1string))
    error (EXIT_FAILURE, errno, "cannot read file 1");
  if (memcmp (fd1string, buf, strlen (fd1string)) != 0)
    error (EXIT_FAILURE, 0, "file 1 does not match");

  return 0;
}


int
do_test (int argc, char *argv[])
{
  pid_t pid;
  int fd4;
  int status;
  posix_spawn_file_actions_t actions;
  char fd1name[18];
  char fd2name[18];
  char fd3name[18];
  char fd4name[18];
  char *name3_copy;
  char *spargv[12];
  int i;

  /* We must have
     - one or four parameters left if called initially
       + path for ld.so		optional
       + "--library-path"	optional
       + the library path	optional
       + the application name
     - five parameters left if called through re-execution
       + file descriptor number which is supposed to be closed
       + the open file descriptor
       + the newly opened file descriptor
       + thhe duped second descriptor
       + the name of the closed descriptor
  */
  if (argc != (restart ? 6 : 2) && argc != (restart ? 6 : 5))
    error (EXIT_FAILURE, 0, "wrong number of arguments (%d)", argc);

  if (restart)
    return handle_restart (argv[1], argv[2], argv[3], argv[4], argv[5]);

  /* Prepare the test.  We are creating two files: one which file descriptor
     will be marked with FD_CLOEXEC, another which is not.  */

   /* Write something in the files.  */
   if (write (temp_fd1, fd1string, strlen (fd1string)) != strlen (fd1string))
     error (EXIT_FAILURE, errno, "cannot write to first file");
   if (write (temp_fd2, fd2string, strlen (fd2string)) != strlen (fd2string))
     error (EXIT_FAILURE, errno, "cannot write to second file");
   if (write (temp_fd3, fd3string, strlen (fd3string)) != strlen (fd3string))
     error (EXIT_FAILURE, errno, "cannot write to third file");

   /* Close the third file.  It'll be opened by `spawn'.  */
   close (temp_fd3);

   /* Tell `spawn' what to do.  */
   if (posix_spawn_file_actions_init (&actions) != 0)
     error (EXIT_FAILURE, errno, "posix_spawn_file_actions_init");
   /* Close `temp_fd1'.  */
   if (posix_spawn_file_actions_addclose (&actions, temp_fd1) != 0)
     error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addclose");
   /* We want to open the third file.  */
   name3_copy = strdup (name3);
   if (name3_copy == NULL)
     error (EXIT_FAILURE, errno, "strdup");
   if (posix_spawn_file_actions_addopen (&actions, temp_fd3, name3_copy,
					 O_RDONLY, 0666) != 0)
     error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addopen");
   /* Overwrite the name to check that a copy has been made.  */
   memset (name3_copy, 'X', strlen (name3_copy));

   /* We dup the second descriptor.  */
   fd4 = MAX (2, MAX (temp_fd1, MAX (temp_fd2, temp_fd3))) + 1;
   if (posix_spawn_file_actions_adddup2 (&actions, temp_fd2, fd4) != 0)
     error (EXIT_FAILURE, errno, "posix_spawn_file_actions_adddup2");

   /* Now spawn the process.  */
   snprintf (fd1name, sizeof fd1name, "%d", temp_fd1);
   snprintf (fd2name, sizeof fd2name, "%d", temp_fd2);
   snprintf (fd3name, sizeof fd3name, "%d", temp_fd3);
   snprintf (fd4name, sizeof fd4name, "%d", fd4);

   for (i = 0; i < (argc == (restart ? 6 : 5) ? 4 : 1); i++)
     spargv[i] = argv[i + 1];
   spargv[i++] = (char *) "--direct";
   spargv[i++] = (char *) "--restart";
   spargv[i++] = fd1name;
   spargv[i++] = fd2name;
   spargv[i++] = fd3name;
   spargv[i++] = fd4name;
   spargv[i++] = name1;
   spargv[i] = NULL;

   if (posix_spawn (&pid, argv[1], &actions, NULL, spargv, environ) != 0)
     error (EXIT_FAILURE, errno, "posix_spawn");

   /* Same test but with a NULL pid argument.  */
   if (posix_spawn (NULL, argv[1], &actions, NULL, spargv, environ) != 0)
     error (EXIT_FAILURE, errno, "posix_spawn");

   /* Cleanup.  */
   if (posix_spawn_file_actions_destroy (&actions) != 0)
     error (EXIT_FAILURE, errno, "posix_spawn_file_actions_destroy");
   free (name3_copy);

  /* Wait for the child.  */
  if (waitpid (pid, &status, 0) != pid)
    error (EXIT_FAILURE, errno, "wrong child");

  if (WTERMSIG (status) != 0)
    error (EXIT_FAILURE, 0, "Child terminated incorrectly");
  status = WEXITSTATUS (status);

  return status;
}
Commit	Line	Data
08c7f6b0	1	/* Tests for spawn.
bfff8b1b	2	Copyright (C) 2000-2017 Free Software Foundation, Inc.
41bdb6e2	3	This file is part of the GNU C Library.
08c7f6b0 UD	4	Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
08c7f6b0 UD	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	14	Lesser General Public License for more details.
08c7f6b0	15
41bdb6e2	16	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	17	License along with the GNU C Library; if not, see
59ba27a6 PE	18	<http://www.gnu.org/licenses/>. */
08c7f6b0 UD	19
	20	#include <errno.h>
	21	#include <error.h>
	22	#include <fcntl.h>
	23	#include <spawn.h>
	24	#include <stdlib.h>
	25	#include <string.h>
	26	#include <unistd.h>
	27	#include <wait.h>
	28	#include <sys/param.h>
	29
	30
	31	/* Nonzero if the program gets called via `exec'. */
	32	static int restart;
	33
	34
	35	#define CMDLINE_OPTIONS \
	36	{ "restart", no_argument, &restart, 1 },
	37
	38	/* Prototype for our test function. */
	39	extern void do_prepare (int argc, char *argv[]);
	40	extern int do_test (int argc, char *argv[]);
	41
	42	/* We have a preparation function. */
	43	#define PREPARE do_prepare
	44
	45	#include "../test-skeleton.c"
	46
	47
	48	/* Name of the temporary files. */
	49	static char *name1;
	50	static char *name2;
	51	static char *name3;
	52
c22553ef FW	53	/* Descriptors for the temporary files. */
	54	static int temp_fd1 = -1;
	55	static int temp_fd2 = -1;
	56	static int temp_fd3 = -1;
	57
08c7f6b0 UD	58	/* The contents of our files. */
	59	static const char fd1string[] = "This file should get closed";
	60	static const char fd2string[] = "This file should stay opened";
	61	static const char fd3string[] = "This file will be opened";
	62
	63
	64	/* We have a preparation function. */
	65	void
	66	do_prepare (int argc, char *argv[])
	67	{
c22553ef FW	68	/* We must not open any files in the restart case. */
	69	if (restart)
	70	return;
	71
	72	temp_fd1 = create_temp_file ("spawn", &name1);
	73	temp_fd2 = create_temp_file ("spawn", &name2);
	74	temp_fd3 = create_temp_file ("spawn", &name3);
	75	if (temp_fd1 < 0 \|\| temp_fd2 < 0 \|\| temp_fd3 < 0)
	76	exit (1);
08c7f6b0 UD	77	}
	78
	79
	80	static int
	81	handle_restart (const char fd1s, const char fd2s, const char *fd3s,
	82	const char fd4s, const char name)
	83	{
	84	char buf[100];
	85	int fd1;
	86	int fd2;
	87	int fd3;
	88	int fd4;
	89
	90	/* First get the descriptors. */
	91	fd1 = atol (fd1s);
	92	fd2 = atol (fd2s);
	93	fd3 = atol (fd3s);
	94	fd4 = atol (fd4s);
	95
	96	/* Sanity check. */
	97	if (fd1 == fd2)
	98	error (EXIT_FAILURE, 0, "value of fd1 and fd2 is the same");
	99	if (fd1 == fd3)
	100	error (EXIT_FAILURE, 0, "value of fd1 and fd3 is the same");
	101	if (fd1 == fd4)
	102	error (EXIT_FAILURE, 0, "value of fd1 and fd4 is the same");
	103	if (fd2 == fd3)
	104	error (EXIT_FAILURE, 0, "value of fd2 and fd3 is the same");
	105	if (fd2 == fd4)
	106	error (EXIT_FAILURE, 0, "value of fd2 and fd4 is the same");
	107	if (fd3 == fd4)
	108	error (EXIT_FAILURE, 0, "value of fd3 and fd4 is the same");
	109
	110	/* First the easy part: read from the file descriptor which is
	111	supposed to be open. */
	112	if (lseek (fd2, 0, SEEK_CUR) != strlen (fd2string))
	113	error (EXIT_FAILURE, errno, "file 2 not in right position");
	114	/* The duped descriptor must have the same position. */
	115	if (lseek (fd4, 0, SEEK_CUR) != strlen (fd2string))
	116	error (EXIT_FAILURE, errno, "file 4 not in right position");
	117	if (lseek (fd2, 0, SEEK_SET) != 0)
	118	error (EXIT_FAILURE, 0, "cannot reset position in file 2");
	119	if (lseek (fd4, 0, SEEK_CUR) != 0)
	120	error (EXIT_FAILURE, errno, "file 4 not set back, too");
	121	if (read (fd2, buf, sizeof buf) != strlen (fd2string))
	122	error (EXIT_FAILURE, 0, "cannot read file 2");
	123	if (memcmp (fd2string, buf, strlen (fd2string)) != 0)
	124	error (EXIT_FAILURE, 0, "file 2 does not match");
	125
	126	/* Now read from the third file. */
	127	if (read (fd3, buf, sizeof buf) != strlen (fd3string))
	128	error (EXIT_FAILURE, 0, "cannot read file 3");
	129	if (memcmp (fd3string, buf, strlen (fd3string)) != 0)
	130	error (EXIT_FAILURE, 0, "file 3 does not match");
	131	/* Try to write to the file. This should not be allowed. */
	132	if (write (fd3, "boo!", 4) != -1 \|\| errno != EBADF)
	133	error (EXIT_FAILURE, 0, "file 3 is writable");
	134
	135	/* Now try to read the first file. First make sure it is not opened. */
	136	if (lseek (fd1, 0, SEEK_CUR) != (off_t) -1 \|\| errno != EBADF)
	137	error (EXIT_FAILURE, 0, "file 1 (%d) is not closed", fd1);
	138
	139	/* Now open the file and read it. */
	140	fd1 = open (name, O_RDONLY);
141	if (fd1 == -1)
142	error (EXIT_FAILURE, errno,
143	"cannot open first file \"%s\" for verification", name);
144
145	if (read (fd1, buf, sizeof buf) != strlen (fd1string))
146	error (EXIT_FAILURE, errno, "cannot read file 1");
147	if (memcmp (fd1string, buf, strlen (fd1string)) != 0)
148	error (EXIT_FAILURE, 0, "file 1 does not match");
149
150	return 0;
151	}
152
153
154	int
155	do_test (int argc, char *argv[])
156	{
157	pid_t pid;
08c7f6b0 UD	158	int fd4;
	159	int status;
	160	posix_spawn_file_actions_t actions;
	161	char fd1name[18];
	162	char fd2name[18];
	163	char fd3name[18];
	164	char fd4name[18];
89e435f3	165	char *name3_copy;
08c7f6b0	166	char *spargv[12];
4cf8f209	167	int i;
08c7f6b0 UD	168
08c7f6b0 UD	169	/* We must have
4cf8f209 L	170	- one or four parameters left if called initially
	171	+ path for ld.so optional
	172	+ "--library-path" optional
	173	+ the library path optional
08c7f6b0	174	+ the application name
726b7b0f	175	- five parameters left if called through re-execution
08c7f6b0 UD	176	+ file descriptor number which is supposed to be closed
	177	+ the open file descriptor
	178	+ the newly opened file descriptor
	179	+ thhe duped second descriptor
	180	+ the name of the closed descriptor
	181	*/
4cf8f209	182	if (argc != (restart ? 6 : 2) && argc != (restart ? 6 : 5))
08c7f6b0 UD	183	error (EXIT_FAILURE, 0, "wrong number of arguments (%d)", argc);
	184
	185	if (restart)
726b7b0f	186	return handle_restart (argv[1], argv[2], argv[3], argv[4], argv[5]);
08c7f6b0 UD	187
	188	/* Prepare the test. We are creating two files: one which file descriptor
	189	will be marked with FD_CLOEXEC, another which is not. */
	190
08c7f6b0	191	/* Write something in the files. */
c22553ef	192	if (write (temp_fd1, fd1string, strlen (fd1string)) != strlen (fd1string))
08c7f6b0	193	error (EXIT_FAILURE, errno, "cannot write to first file");
c22553ef	194	if (write (temp_fd2, fd2string, strlen (fd2string)) != strlen (fd2string))
08c7f6b0	195	error (EXIT_FAILURE, errno, "cannot write to second file");
c22553ef	196	if (write (temp_fd3, fd3string, strlen (fd3string)) != strlen (fd3string))
08c7f6b0 UD	197	error (EXIT_FAILURE, errno, "cannot write to third file");
	198
	199	/* Close the third file. It'll be opened by `spawn'. */
c22553ef	200	close (temp_fd3);
08c7f6b0 UD	201
	202	/* Tell `spawn' what to do. */
	203	if (posix_spawn_file_actions_init (&actions) != 0)
	204	error (EXIT_FAILURE, errno, "posix_spawn_file_actions_init");
c22553ef FW	205	/* Close `temp_fd1'. */
c22553ef FW	206	if (posix_spawn_file_actions_addclose (&actions, temp_fd1) != 0)
08c7f6b0 UD	207	error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addclose");
08c7f6b0 UD	208	/* We want to open the third file. */
89e435f3 FW	209	name3_copy = strdup (name3);
	210	if (name3_copy == NULL)
	211	error (EXIT_FAILURE, errno, "strdup");
c22553ef	212	if (posix_spawn_file_actions_addopen (&actions, temp_fd3, name3_copy,
08c7f6b0 UD	213	O_RDONLY, 0666) != 0)
08c7f6b0 UD	214	error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addopen");
89e435f3 FW	215	/* Overwrite the name to check that a copy has been made. */
	216	memset (name3_copy, 'X', strlen (name3_copy));
	217
08c7f6b0	218	/* We dup the second descriptor. */
c22553ef FW	219	fd4 = MAX (2, MAX (temp_fd1, MAX (temp_fd2, temp_fd3))) + 1;
c22553ef FW	220	if (posix_spawn_file_actions_adddup2 (&actions, temp_fd2, fd4) != 0)
08c7f6b0 UD	221	error (EXIT_FAILURE, errno, "posix_spawn_file_actions_adddup2");
	222
	223	/* Now spawn the process. */
c22553ef FW	224	snprintf (fd1name, sizeof fd1name, "%d", temp_fd1);
	225	snprintf (fd2name, sizeof fd2name, "%d", temp_fd2);
	226	snprintf (fd3name, sizeof fd3name, "%d", temp_fd3);
08c7f6b0 UD	227	snprintf (fd4name, sizeof fd4name, "%d", fd4);
08c7f6b0 UD	228
4cf8f209 L	229	for (i = 0; i < (argc == (restart ? 6 : 5) ? 4 : 1); i++)
	230	spargv[i] = argv[i + 1];
	231	spargv[i++] = (char *) "--direct";
	232	spargv[i++] = (char *) "--restart";
	233	spargv[i++] = fd1name;
	234	spargv[i++] = fd2name;
	235	spargv[i++] = fd3name;
	236	spargv[i++] = fd4name;
	237	spargv[i++] = name1;
	238	spargv[i] = NULL;
08c7f6b0	239
726b7b0f	240	if (posix_spawn (&pid, argv[1], &actions, NULL, spargv, environ) != 0)
08c7f6b0 UD	241	error (EXIT_FAILURE, errno, "posix_spawn");
08c7f6b0 UD	242
2a69f853 AZ	243	/* Same test but with a NULL pid argument. */
	244	if (posix_spawn (NULL, argv[1], &actions, NULL, spargv, environ) != 0)
	245	error (EXIT_FAILURE, errno, "posix_spawn");
	246
08c7f6b0 UD	247	/* Cleanup. */
	248	if (posix_spawn_file_actions_destroy (&actions) != 0)
	249	error (EXIT_FAILURE, errno, "posix_spawn_file_actions_destroy");
89e435f3	250	free (name3_copy);
08c7f6b0 UD	251
	252	/* Wait for the child. */
	253	if (waitpid (pid, &status, 0) != pid)
	254	error (EXIT_FAILURE, errno, "wrong child");
	255
	256	if (WTERMSIG (status) != 0)
	257	error (EXIT_FAILURE, 0, "Child terminated incorrectly");
	258	status = WEXITSTATUS (status);
	259
08c7f6b0 UD	260	return status;
08c7f6b0 UD	261	}