commit 8022fc7d5119a22e9e0ac72798f649385b0e167a Author: Frédéric Bérat Date: Wed Jun 14 10:52:07 2023 +0200 tests: replace system by xsystem With fortification enabled, system calls return result needs to be checked, has it gets the __wur macro enabled. Reviewed-by: Siddhesh Poyarekar Conflicts: nptl/tst-cancel7.c (change not relevant for this version) diff --git a/elf/tst-stackguard1.c b/elf/tst-stackguard1.c index 6584740d6aa26f5f..9c4a5ccde0c659a9 100644 --- a/elf/tst-stackguard1.c +++ b/elf/tst-stackguard1.c @@ -27,6 +27,8 @@ #include #include +#include + static const char *command; static bool child; static uintptr_t stack_chk_guard_copy; @@ -109,7 +111,8 @@ do_test (void) dup2 (fds[1], 2); close (fds[1]); - system (command); + xsystem (command); + exit (0); } diff --git a/libio/bug-mmap-fflush.c b/libio/bug-mmap-fflush.c index d8aa58985aa0790c..3f99222eefa7d4c3 100644 --- a/libio/bug-mmap-fflush.c +++ b/libio/bug-mmap-fflush.c @@ -4,6 +4,7 @@ #include #include +#include static char *fname; @@ -35,14 +36,16 @@ do_test (void) char buffer[1024]; snprintf (buffer, sizeof (buffer), "echo 'From foo@bar.com' > %s", fname); - system (buffer); + xsystem (buffer); + f = fopen (fname, "r"); fseek (f, 0, SEEK_END); o = ftello (f); fseek (f, 0, SEEK_SET); fflush (f); snprintf (buffer, sizeof (buffer), "echo 'From bar@baz.edu' >> %s", fname); - system (buffer); + xsystem (buffer); + fseek (f, o, SEEK_SET); if (fgets (buffer, 1024, f) == NULL) exit (1); diff --git a/nptl/tst-cancel7.c b/nptl/tst-cancel7.c index 7a1870ac74b23faa..338cecc8293638b0 100644 --- a/nptl/tst-cancel7.c +++ b/nptl/tst-cancel7.c @@ -41,6 +41,7 @@ tf (void *arg) strcpy (stpcpy (stpcpy (cmd, command), args), pidfilename); system (cmd); + /* This call should never return. */ return NULL; } diff --git a/nptl/tst-stackguard1.c b/nptl/tst-stackguard1.c index cac492ec34808617..5b9d57a73327b3c8 100644 --- a/nptl/tst-stackguard1.c +++ b/nptl/tst-stackguard1.c @@ -29,6 +29,7 @@ #include #include +#include static const char *command; static bool child; @@ -141,7 +142,8 @@ do_test (void) dup2 (fds[1], 2); close (fds[1]); - system (command); + xsystem (command); + exit (0); } diff --git a/nss/tst-nss-db-endpwent.c b/nss/tst-nss-db-endpwent.c index 5932a9800f33b717..d25033afabc01c30 100644 --- a/nss/tst-nss-db-endpwent.c +++ b/nss/tst-nss-db-endpwent.c @@ -23,6 +23,7 @@ #include #include +#include /* It is entirely allowed to start with a getpwent call without resetting the state of the service via a call to setpwent. @@ -55,7 +56,7 @@ do_test (void) cmd = xasprintf ("%s/makedb -o /var/db/passwd.db /var/db/passwd.in", support_bindir_prefix); - system (cmd); + xsystem (cmd); free (cmd); try_it (); diff --git a/support/Makefile b/support/Makefile index 3b8509c88db4662a..47d5db4629b029d3 100644 --- a/support/Makefile +++ b/support/Makefile @@ -221,6 +221,7 @@ libsupport-routines = \ xstrndup \ xsymlink \ xsysconf \ + xsystem \ xunlink \ xuselocale \ xwaitpid \ diff --git a/support/xstdlib.h b/support/xstdlib.h new file mode 100644 index 0000000000000000..db5a5b9d4fd1fa71 --- /dev/null +++ b/support/xstdlib.h @@ -0,0 +1,31 @@ +/* Error-checking wrappers for stdlib functions. + Copyright (C) 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 + 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 + . */ + +#ifndef SUPPORT_XSTDLIB_H +#define SUPPORT_XSTDLIB_H + +#include +#include + +__BEGIN_DECLS + +void xsystem (const char *cmd); + +__END_DECLS + +#endif /* SUPPORT_XSTDLIB_H */ diff --git a/support/xsystem.c b/support/xsystem.c new file mode 100644 index 0000000000000000..1f558953bca8f5b2 --- /dev/null +++ b/support/xsystem.c @@ -0,0 +1,37 @@ +/* Error-checking replacement for "system". + Copyright (C) 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 + 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 + . */ + +#include +#include + +#include + +void +xsystem (const char *cmd) +{ + int ret = system (cmd); + + if (ret == 0 && cmd == NULL) + FAIL_EXIT1 ("Unable to spawn a shell for NULL command"); + + if (ret == 127) + FAIL_EXIT1 ("Child terminated with status 127"); + + if (ret < 0) + FAIL_EXIT1 ("system (\"%s\")", cmd); +}