libbb: introduce and use chdir_or_warn()

function                                             old     new   delta
chdir_or_warn                                          -      37     +37
send_cgi_and_exit                                    720     711      -9
xchdir                                                27      15     -12
setup_environment                                    233     217     -16
fork_job                                             449     433     -16
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/4 up/down: 37/-53)            Total: -16 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 780e9ae7d..91b456915 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -645,6 +645,7 @@ void xsetgid(gid_t gid) FAST_FUNC;
 void xsetuid(uid_t uid) FAST_FUNC;
 void xsetegid(gid_t egid) FAST_FUNC;
 void xseteuid(uid_t euid) FAST_FUNC;
+int chdir_or_warn(const char *path) FAST_FUNC;
 void xchdir(const char *path) FAST_FUNC;
 void xfchdir(int fd) FAST_FUNC;
 void xchroot(const char *path) FAST_FUNC;