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| author | Harald Hoyer | 2012-03-14 10:07:18 +0100 |
|---|---|---|
| committer | Karel Zak | 2012-03-20 09:22:54 +0100 |
| commit | 8a2f04ddca527dfbfacbe9c6504e858ef8c5c35d (patch) | |
| tree | be3e0a16494944f680a23defa7139ea1087c10f0 /sys-utils/setsid.c | |
| parent | build-sys: make the crosscompile path for scanf_cv_alloc_modifier clever (diff) | |
| download | kernel-qcow2-util-linux-8a2f04ddca527dfbfacbe9c6504e858ef8c5c35d.tar.gz kernel-qcow2-util-linux-8a2f04ddca527dfbfacbe9c6504e858ef8c5c35d.tar.xz kernel-qcow2-util-linux-8a2f04ddca527dfbfacbe9c6504e858ef8c5c35d.zip | |
setsid: add option "-c" to set the controlling terminal
[kzak@redhat.com: - use STDIN_FILENO rather than 0]
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/setsid.c')
| -rw-r--r-- | sys-utils/setsid.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/sys-utils/setsid.c b/sys-utils/setsid.c index efd20e694..d02879eff 100644 --- a/sys-utils/setsid.c +++ b/sys-utils/setsid.c @@ -15,6 +15,7 @@ #include <stdio.h> #include <stdlib.h> #include <unistd.h> +#include <termio.h> #include "c.h" #include "nls.h" @@ -25,6 +26,9 @@ static void __attribute__ ((__noreturn__)) usage(FILE * out) fprintf(out, _(" %s [options] <program> [arguments ...]\n"), program_invocation_short_name); fprintf(out, USAGE_OPTIONS); + fprintf(out, _( + " -c, --ctty \tset the controlling terminal to the current one\n" + )); fprintf(out, USAGE_HELP); fprintf(out, USAGE_VERSION); fprintf(out, USAGE_MAN_TAIL("setsid(1)")); @@ -34,7 +38,10 @@ static void __attribute__ ((__noreturn__)) usage(FILE * out) int main(int argc, char **argv) { int ch; + int ctty = 0; + static const struct option longopts[] = { + {"ctty", no_argument, NULL, 'c'}, {"version", no_argument, NULL, 'V'}, {"help", no_argument, NULL, 'h'}, {NULL, 0, NULL, 0} @@ -44,11 +51,14 @@ int main(int argc, char **argv) bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); - while ((ch = getopt_long(argc, argv, "+Vh", longopts, NULL)) != -1) + while ((ch = getopt_long(argc, argv, "+Vhc", longopts, NULL)) != -1) switch (ch) { case 'V': printf(UTIL_LINUX_VERSION); return EXIT_SUCCESS; + case 'c': + ctty=1; + break; case 'h': usage(stdout); default: @@ -74,6 +84,10 @@ int main(int argc, char **argv) /* cannot happen */ err(EXIT_FAILURE, _("setsid failed")); - execvp(argv[1], argv + 1); + if (ctty) { + if (ioctl(STDIN_FILENO, TIOCSCTTY, 1)) + warn(_("failed to set the controlling terminal")); + } + execvp(argv[optind], argv + optind + 1); err(EXIT_FAILURE, _("execvp failed")); } |