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authorLaurent Bercot <ska-skaware@skarnet.org>2014-09-19 02:53:32 +0000
committerLaurent Bercot <ska-skaware@skarnet.org>2014-09-19 02:53:32 +0000
commitbea0037dbdd979603fb0b5be8b43f5478c1f6fec (patch)
tree5776ae3af5a3e83d41c7087f70713952b6360988 /src/skaembutils/s6-chown.c
downloads6-portable-utils-bea0037dbdd979603fb0b5be8b43f5478c1f6fec.tar.xz
initial commit
Diffstat (limited to 'src/skaembutils/s6-chown.c')
-rw-r--r--src/skaembutils/s6-chown.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/skaembutils/s6-chown.c b/src/skaembutils/s6-chown.c
new file mode 100644
index 0000000..ef6a4a0
--- /dev/null
+++ b/src/skaembutils/s6-chown.c
@@ -0,0 +1,60 @@
+/* ISC license. */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <skalibs/sgetopt.h>
+#include <skalibs/uint.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/djbunix.h>
+
+#define USAGE "s6-chown [ -U ] [ -u uid ] [ -g gid ] file"
+
+int main (int argc, char const *const *argv, char const *const *envp)
+{
+ int uid = -1, gid = -1 ;
+ PROG = "s6-chown" ;
+ {
+ subgetopt_t l = SUBGETOPT_ZERO ;
+ for (;;)
+ {
+ register int opt = subgetopt_r(argc, argv, "Uu:g:", &l) ;
+ if (opt == -1) break ;
+ switch (opt)
+ {
+ case 'u':
+ {
+ unsigned int u ;
+ if (!uint0_scan(l.arg, &u)) strerr_dieusage(100, USAGE) ;
+ uid = u ;
+ break ;
+ }
+ case 'g':
+ {
+ unsigned int g ;
+ if (!uint0_scan(l.arg, &g)) strerr_dieusage(100, USAGE) ;
+ gid = g ;
+ break ;
+ }
+ case 'U':
+ {
+ unsigned int x ;
+ char const *s = env_get2(envp, "UID") ;
+ if (!s) strerr_dienotset(100, "UID") ;
+ if (!uint0_scan(s, &x)) strerr_dieinvalid(100, "UID") ;
+ uid = x ;
+ s = env_get2(envp, "GID") ;
+ if (!s) strerr_dienotset(100, "GID") ;
+ if (!uint0_scan(s, &x)) strerr_dieinvalid(100, "GID") ;
+ gid = x ;
+ break ;
+ }
+ default : strerr_dieusage(100, USAGE) ;
+ }
+ }
+ argc -= l.ind ; argv += l.ind ;
+ }
+ if (!argc) strerr_dieusage(100, USAGE) ;
+ if (chown(*argv, uid, gid) == -1)
+ strerr_diefu2sys(111, "chown ", argv[0]) ;
+ return 0 ;
+}