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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2022-01-24 11:29:47 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska@appnovation.com> | 2022-01-24 11:29:47 +0000 |
| commit | 4c4e732c0202dd283d6b5822956787ceefc0f5a1 (patch) | |
| tree | fefc5ee2b54e1138e57c6a8965b574559b6a102b | |
| parent | ee97396929ce61ce32cbd3a620f42c5aa98d2651 (diff) | |
| download | s6-linux-init-4c4e732c0202dd283d6b5822956787ceefc0f5a1.tar.xz | |
Better usage message for telinit when invoked as init
Signed-off-by: Laurent Bercot <ska@appnovation.com>
| -rw-r--r-- | src/init/s6-linux-init-telinit.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/init/s6-linux-init-telinit.c b/src/init/s6-linux-init-telinit.c index 65fb491..ef99e5f 100644 --- a/src/init/s6-linux-init-telinit.c +++ b/src/init/s6-linux-init-telinit.c @@ -15,12 +15,23 @@ #include "initctl.h" #define USAGE "s6-linux-init-telinit runlevel" -#define dieusage() strerr_dieusage(100, USAGE) +#define USAGE1 "(as pid 1) s6-linux-init [ -c basedir ] [ -p initpath ] [ -s envdumpdir ] [ -m umask ] [ -d devtmpfs ] [ -D initdefault ] [ -n | -N ] [ -C ] [ -B ] stage2_args..." int main (int argc, char const *const *argv, char const *const *envp) { char const *newargv[8] = { S6_EXTBINPREFIX "s6-sudo", "-e", "-T", "3600000", "--", RUNLEVELD_PATH, 0, 0 } ; - PROG = "s6-linux-init-telinit" ; + char const *usage = strrchr(argv[0], '/') ; + if (usage) usage++ ; else usage = argv[0] ; + if (!strcmp(usage, "init") || !strcmp(usage, "s6-linux-init")) + { + usage = USAGE1 ; + PROG = "s6-linux-init" ; + } + else + { + usage = USAGE ; + PROG = "s6-linux-init-telinit" ; + } { subgetopt l = SUBGETOPT_ZERO ; for (;;) @@ -40,13 +51,13 @@ int main (int argc, char const *const *argv, char const *const *envp) case 'C' : case 'B' : break ; - default : dieusage() ; + default : strerr_dieusage(100, usage) ; } } argc -= l.ind ; argv += l.ind ; } - if (!argc) dieusage() ; + if (!argc) strerr_dieusage(100, usage) ; newargv[6] = argv[0] ; |