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fix parent-memory-clobber in posix_spawn (environ)

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This commit is contained in:
Rich Felker
2012-10-18 16:41:27 -04:00
parent 44eb4d8b9b
commit 97c8bdd88a
3 changed files with 17 additions and 9 deletions
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7
src/process/posix_spawn.c
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@ -19,7 +19,7 @@ weak_alias(dummy_0, __release_ptc);
pid_t __vfork(void);
int __posix_spawnx(pid_t *restrict res, const char *restrict path,
int (*exec)(const char *, char *const *),
int (*exec)(const char *, char *const *, char *const *),
const posix_spawn_file_actions_t *fa,
const posix_spawnattr_t *restrict attr,
char *const argv[restrict], char *const envp[restrict])
@ -95,8 +95,7 @@ int __posix_spawnx(pid_t *restrict res, const char *restrict path,
sigprocmask(SIG_SETMASK, (attr->__flags & POSIX_SPAWN_SETSIGMASK)
? &attr->__mask : &oldmask, 0);
if (envp) environ = (char **)envp;
exec(path, argv);
exec(path, argv, envp ? envp : environ);
_exit(127);
return 0;
@ -107,5 +106,5 @@ int posix_spawn(pid_t *restrict res, const char *restrict path,
const posix_spawnattr_t *restrict attr,
char *const argv[restrict], char *const envp[restrict])
{
return __posix_spawnx(res, path, execv, fa, attr, argv, envp);
return __posix_spawnx(res, path, execve, fa, attr, argv, envp);
}