diff options
Diffstat (limited to 'posix')
| -rw-r--r-- | posix/Makefile | 15 | ||||
| -rw-r--r-- | posix/execvp.c | 104 | ||||
| -rw-r--r-- | posix/tst-vfork3.c | 224 |
3 files changed, 298 insertions, 45 deletions
diff --git a/posix/Makefile b/posix/Makefile index b68435b..712e7c2 100644 --- a/posix/Makefile +++ b/posix/Makefile @@ -1,4 +1,4 @@ -# Copyright (C) 1991-1999, 2000-2005, 2006 Free Software Foundation, Inc. +# Copyright (C) 1991-1999, 2000-2006, 2007 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 @@ -83,7 +83,7 @@ tests := tstgetopt testfnm runtests runptests \ bug-regex21 bug-regex22 bug-regex23 bug-regex24 \ bug-regex25 bug-regex26 tst-nice tst-nanosleep tst-regex2 \ transbug tst-rxspencer tst-pcre tst-boost \ - bug-ga1 tst-vfork1 tst-vfork2 tst-waitid \ + bug-ga1 tst-vfork1 tst-vfork2 tst-vfork3 tst-waitid \ tst-getaddrinfo2 bug-glob1 bug-glob2 tst-sysconf \ tst-execvp1 tst-execvp2 tst-execlp1 tst-execlp2 \ tst-execv1 tst-execv2 tst-execl1 tst-execl2 \ @@ -108,7 +108,8 @@ generated := $(addprefix wordexp-test-result, 1 2 3 4 5 6 7 8 9 10) \ bug-regex21-mem bug-regex21.mtrace \ tst-rxspencer-mem tst-rxspencer.mtrace tst-getconf.out \ tst-pcre-mem tst-pcre.mtrace tst-boost-mem tst-boost.mtrace \ - bug-ga2.mtrace bug-ga2-mem bug-glob2.mtrace bug-glob2-mem + bug-ga2.mtrace bug-ga2-mem bug-glob2.mtrace bug-glob2-mem \ + tst-vfork3-mem tst-vfork3.mtrace include ../Rules @@ -174,6 +175,7 @@ tst-exec-ARGS = -- $(built-program-cmd) tst-spawn-ARGS = -- $(built-program-cmd) tst-dir-ARGS = `pwd` `cd $(common-objdir)/$(subdir); pwd` `cd $(common-objdir); pwd` $(objpfx)tst-dir tst-chmod-ARGS = `pwd` +tst-vfork3-ARGS = --test-dir=$(objpfx) tst-fnmatch-ENV = LOCPATH=$(common-objpfx)localedata tst-regexloc-ENV = LOCPATH=$(common-objpfx)localedata @@ -218,7 +220,7 @@ ifeq (no,$(cross-compiling)) tests: $(objpfx)bug-regex2-mem $(objpfx)bug-regex14-mem \ $(objpfx)bug-regex21-mem $(objpfx)tst-rxspencer-mem \ $(objpfx)tst-pcre-mem $(objpfx)tst-boost-mem $(objpfx)tst-getconf.out \ - $(objpfx)bug-glob2-mem + $(objpfx)bug-glob2-mem $(objpfx)tst-vfork3-mem xtests: $(objpfx)bug-ga2-mem endif @@ -245,6 +247,11 @@ bug-regex21-ENV = MALLOC_TRACE=$(objpfx)bug-regex21.mtrace $(objpfx)bug-regex21-mem: $(objpfx)bug-regex21.out $(common-objpfx)malloc/mtrace $(objpfx)bug-regex21.mtrace > $@ +tst-vfork3-ENV = MALLOC_TRACE=$(objpfx)tst-vfork3.mtrace + +$(objpfx)tst-vfork3-mem: $(objpfx)tst-vfork3.out + $(common-objpfx)malloc/mtrace $(objpfx)tst-vfork3.mtrace > $@ + # tst-rxspencer.mtrace is generated only when run without --utf8 # option, since otherwise the file has almost 100M and takes very long # time to process. diff --git a/posix/execvp.c b/posix/execvp.c index 8421bd0..887379e 100644 --- a/posix/execvp.c +++ b/posix/execvp.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1991,92,1995-99,2002,2004,2005 Free Software Foundation, Inc. +/* Copyright (C) 1991,92, 1995-99, 2002, 2004, 2005, 2007 + 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 @@ -16,6 +17,7 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <alloca.h> #include <unistd.h> #include <stdarg.h> #include <stdbool.h> @@ -27,29 +29,18 @@ /* The file is accessible but it is not an executable file. Invoke the shell to interpret it as a script. */ -static char ** +static void internal_function -allocate_scripts_argv (const char *file, char *const argv[]) +scripts_argv (const char *file, char *const argv[], int argc, char **new_argv) { - /* Count the arguments. */ - int argc = 0; - while (argv[argc++]) - ; - /* Construct an argument list for the shell. */ - char **new_argv = (char **) malloc ((argc + 1) * sizeof (char *)); - if (new_argv != NULL) + new_argv[0] = (char *) _PATH_BSHELL; + new_argv[1] = (char *) file; + while (argc > 1) { - new_argv[0] = (char *) _PATH_BSHELL; - new_argv[1] = (char *) file; - while (argc > 1) - { - new_argv[argc] = argv[argc - 1]; - --argc; - } + new_argv[argc] = argv[argc - 1]; + --argc; } - - return new_argv; } @@ -67,8 +58,6 @@ execvp (file, argv) return -1; } - char **script_argv = NULL; - if (strchr (file, '/') != NULL) { /* Don't search when it contains a slash. */ @@ -76,46 +65,71 @@ execvp (file, argv) if (errno == ENOEXEC) { - script_argv = allocate_scripts_argv (file, argv); + /* Count the arguments. */ + int argc = 0; + while (argv[argc++]) + ; + size_t len = (argc + 1) * sizeof (char *); + char **script_argv; + void *ptr = NULL; + if (__libc_use_alloca (len)) + script_argv = alloca (len); + else + script_argv = ptr = malloc (len); + if (script_argv != NULL) { + scripts_argv (file, argv, argc, script_argv); __execve (script_argv[0], script_argv, __environ); - free (script_argv); + free (ptr); } } } else { + size_t pathlen; + size_t alloclen = 0; char *path = getenv ("PATH"); + if (path == NULL) + { + pathlen = confstr (_CS_PATH, (char *) NULL, 0); + alloclen = pathlen + 1; + } + else + pathlen = strlen (path); + + size_t len = strlen (file) + 1; + alloclen += pathlen + len + 1; + + char *name; char *path_malloc = NULL; + if (__libc_use_alloca (alloclen)) + name = alloca (alloclen); + else + { + path_malloc = name = malloc (alloclen); + if (name == NULL) + return -1; + } + if (path == NULL) { /* There is no `PATH' in the environment. The default search path is the current directory followed by the path `confstr' returns for `_CS_PATH'. */ - size_t len = confstr (_CS_PATH, (char *) NULL, 0); - path = (char *) malloc (1 + len); - if (path == NULL) - return -1; + path = name + pathlen + len + 1; path[0] = ':'; - (void) confstr (_CS_PATH, path + 1, len); - path_malloc = path; + (void) confstr (_CS_PATH, path + 1, pathlen); } - size_t len = strlen (file) + 1; - size_t pathlen = strlen (path); - char *name = malloc (pathlen + len + 1); - if (name == NULL) - { - free (path_malloc); - return -1; - } /* Copy the file name at the top. */ name = (char *) memcpy (name + pathlen + 1, file, len); /* And add the slash. */ *--name = '/'; + char **script_argv = NULL; + void *script_argv_malloc = NULL; bool got_eacces = false; char *p = path; do @@ -139,7 +153,15 @@ execvp (file, argv) { if (script_argv == NULL) { - script_argv = allocate_scripts_argv (startp, argv); + /* Count the arguments. */ + int argc = 0; + while (argv[argc++]) + ; + size_t arglen = (argc + 1) * sizeof (char *); + if (__libc_use_alloca (alloclen + arglen)) + script_argv = alloca (arglen); + else + script_argv = script_argv_malloc = malloc (arglen); if (script_argv == NULL) { /* A possible EACCES error is not as important as @@ -147,6 +169,7 @@ execvp (file, argv) got_eacces = false; break; } + scripts_argv (startp, argv, argc, script_argv); } __execve (script_argv[0], script_argv, __environ); @@ -184,11 +207,10 @@ execvp (file, argv) /* We tried every element and none of them worked. */ if (got_eacces) /* At least one failure was due to permissions, so report that - error. */ + error. */ __set_errno (EACCES); - free (script_argv); - free (name - pathlen); + free (script_argv_malloc); free (path_malloc); } diff --git a/posix/tst-vfork3.c b/posix/tst-vfork3.c new file mode 100644 index 0000000..954d395 --- /dev/null +++ b/posix/tst-vfork3.c @@ -0,0 +1,224 @@ +/* Test for vfork functions. + Copyright (C) 2007 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2007. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <mcheck.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/wait.h> + +static int do_test (void); +static void do_prepare (void); +char *tmpdirname; + +#define TEST_FUNCTION do_test () +#define PREPARE(argc, argv) do_prepare () +#include "../test-skeleton.c" + +static int +do_test (void) +{ + mtrace (); + + const char *path = getenv ("PATH"); + if (path == NULL) + path = "/bin"; + char pathbuf[strlen (tmpdirname) + 1 + strlen (path) + 1]; + strcpy (stpcpy (stpcpy (pathbuf, tmpdirname), ":"), path); + if (setenv ("PATH", pathbuf, 1) < 0) + { + puts ("setenv failed"); + return 1; + } + + size_t i; + char *argv[3] = { (char *) "script1.sh", (char *) "1", NULL }; + for (i = 0; i < 5; i++) + { + pid_t pid = vfork (); + if (pid < 0) + { + printf ("vfork failed: %m\n"); + return 1; + } + else if (pid == 0) + { + execvp ("script1.sh", argv); + _exit (errno); + } + int status; + if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) + { + puts ("waitpid failed"); + return 1; + } + else if (status != 0) + { + if (WIFEXITED (status)) + printf ("script1.sh failed with status %d\n", + WEXITSTATUS (status)); + else + printf ("script1.sh kill by signal %d\n", + WTERMSIG (status)); + return 1; + } + } + + argv[0] = (char *) "script2.sh"; + argv[1] = (char *) "2"; + for (i = 0; i < 5; i++) + { + pid_t pid = vfork (); + if (pid < 0) + { + printf ("vfork failed: %m\n"); + return 1; + } + else if (pid == 0) + { + execvp ("script2.sh", argv); + _exit (errno); + } + int status; + if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) + { + puts ("waitpid failed"); + return 1; + } + else if (status != 0) + { + printf ("script2.sh failed with status %d\n", status); + return 1; + } + } + + for (i = 0; i < 5; i++) + { + pid_t pid = vfork (); + if (pid < 0) + { + printf ("vfork failed: %m\n"); + return 1; + } + else if (pid == 0) + { + execlp ("script2.sh", "script2.sh", "3", NULL); + _exit (errno); + } + int status; + if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) + { + puts ("waitpid failed"); + return 1; + } + else if (status != 0) + { + printf ("script2.sh failed with status %d\n", status); + return 1; + } + } + + unsetenv ("PATH"); + argv[0] = (char *) "echo"; + argv[1] = (char *) "script 4"; + for (i = 0; i < 5; i++) + { + pid_t pid = vfork (); + if (pid < 0) + { + printf ("vfork failed: %m\n"); + return 1; + } + else if (pid == 0) + { + execvp ("echo", argv); + _exit (errno); + } + int status; + if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) + { + puts ("waitpid failed"); + return 1; + } + else if (status != 0) + { + printf ("echo failed with status %d\n", status); + return 1; + } + } + + return 0; +} + +static void +do_prepare (void) +{ + size_t len = strlen (test_dir) + sizeof ("/tst-vfork3.XXXXXX"); + tmpdirname = malloc (len); + char *script1 = malloc (len + sizeof "/script1.sh"); + char *script2 = malloc (len + sizeof "/script2.sh"); + if (tmpdirname == NULL || script1 == NULL || script2 == NULL) + { + puts ("out of memory"); + exit (1); + } + strcpy (stpcpy (tmpdirname, test_dir), "/tst-vfork3.XXXXXX"); + + tmpdirname = mkdtemp (tmpdirname); + if (tmpdirname == NULL) + { + puts ("could not create temporary directory"); + exit (1); + } + + strcpy (stpcpy (script1, tmpdirname), "/script1.sh"); + strcpy (stpcpy (script2, tmpdirname), "/script2.sh"); + + /* Need to make sure tmpdirname is at the end of the linked list. */ + add_temp_file (script1); + add_temp_file (tmpdirname); + add_temp_file (script2); + + const char content1[] = "#!/bin/sh\necho script $1\n"; + int fd = open (script1, O_WRONLY | O_CREAT, 0700); + if (fd < 0 + || TEMP_FAILURE_RETRY (write (fd, content1, sizeof content1)) + != sizeof content1 + || fchmod (fd, S_IRUSR | S_IXUSR) < 0) + { + printf ("Could not write %s\n", script1); + exit (1); + } + close (fd); + + const char content2[] = "echo script $1\n"; + fd = open (script2, O_WRONLY | O_CREAT, 0700); + if (fd < 0 + || TEMP_FAILURE_RETRY (write (fd, content2, sizeof content2)) + != sizeof content2 + || fchmod (fd, S_IRUSR | S_IXUSR) < 0) + { + printf ("Could not write %s\n", script2); + exit (1); + } + close (fd); +} |