diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2016-04-01 22:12:44 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2016-04-01 22:12:44 +0200 |
| commit | c4199f22d0f7793b70db51c01783f0d45afce3d4 (patch) | |
| tree | d54b8df23749d5ea06dc5effd5ba111b8e2cf52f /libbb | |
| parent | 29b33b63d49be88200f794d832450a4c71e85a5e (diff) | |
libbb: two new functions: wait_for_exitstatus(pid), xfchdir(fd)
Bartosz Golaszewski proposed xfchdir()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb')
| -rw-r--r-- | libbb/xfuncs.c | 12 | ||||
| -rw-r--r-- | libbb/xfuncs_printf.c | 6 |
2 files changed, 18 insertions, 0 deletions
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c index 206edb4a0..3f9a84ad4 100644 --- a/libbb/xfuncs.c +++ b/libbb/xfuncs.c @@ -315,3 +315,15 @@ int FAST_FUNC wait4pid(pid_t pid) return WTERMSIG(status) + 0x180; return 0; } + +// Useful when we do know that pid is valid, and we just want to wait +// for it to exit. Not existing pid is fatal. waitpid() status is not returned. +int FAST_FUNC wait_for_exitstatus(pid_t pid) +{ + int exit_status, n; + + n = safe_waitpid(pid, &exit_status, 0); + if (n < 0) + bb_perror_msg_and_die("waitpid"); + return exit_status; +} diff --git a/libbb/xfuncs_printf.c b/libbb/xfuncs_printf.c index 73488908d..4aa1b5ce2 100644 --- a/libbb/xfuncs_printf.c +++ b/libbb/xfuncs_printf.c @@ -390,6 +390,12 @@ void FAST_FUNC xchdir(const char *path) bb_perror_msg_and_die("can't change directory to '%s'", path); } +void FAST_FUNC xfchdir(int fd) +{ + if (fchdir(fd)) + bb_perror_msg_and_die("fchdir"); +} + void FAST_FUNC xchroot(const char *path) { if (chroot(path)) |