libredirect: add posix_spawnp support

After bumping sublime3 in #61636 we realized that saving files as root
doesn’t work anymore and somehow the paths weren’t patched by
`libredirect`.

After some debugging it came out that Sublime switched from `posix_spawn(3)`
to `posix_spawnp(3)` to start new processes internally. Since `libredirect`
only handled the former, `/usr/bin/pkexec` stopped being redirected.

Wrapping `posix_spawnp` fixes the problem.
This commit is contained in:
Maximilian Bosch 2019-06-16 17:27:22 +02:00 committed by Jan Tojnar
parent e8cdece9ce
commit a3667ee6be
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@ -160,6 +160,19 @@ int posix_spawn(pid_t * pid, const char * path,
return posix_spawn_real(pid, rewrite(path, buf), file_actions, attrp, argv, envp);
}
int posix_spawnp(pid_t * pid, const char * file,
const posix_spawn_file_actions_t * file_actions,
const posix_spawnattr_t * attrp,
char * const argv[], char * const envp[])
{
int (*posix_spawnp_real) (pid_t *, const char *,
const posix_spawn_file_actions_t *,
const posix_spawnattr_t *,
char * const argv[], char * const envp[]) = dlsym(RTLD_NEXT, "posix_spawnp");
char buf[PATH_MAX];
return posix_spawnp_real(pid, rewrite(file, buf), file_actions, attrp, argv, envp);
}
int execv(const char *path, char *const argv[])
{
int (*execv_real) (const char *path, char *const argv[]) = dlsym(RTLD_NEXT, "execv");