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Autogenerate man page for mnexec.

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This commit is contained in:
Bob Lantz
2012-07-06 23:18:24 -07:00
parent 89a6dea7f9
commit d85a58feeb
3 changed files with 36 additions and 18 deletions
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mnexec.c
+23 -11
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@@ -23,17 +23,23 @@
#include <limits.h>
#include <sched.h>
#if !defined(VERSION)
#define VERSION "(devel)"
#endif
void usage(char *name)
{
printf("Execution utility for Mininet.\n"
"usage: %s [-cdnp] [-a pid] [-g group] [-r rtprio] cmd args...\n"
"-c: close all file descriptors except stdin/out/error\n"
"-d: detach from tty by calling setsid()\n"
"-n: run in new network namespace\n"
"-p: print ^A + pid\n"
"-a pid: attach to pid's network namespace\n"
"-g group: add to cgroup\n"
"-r rtprio: run with SCHED_RR (usually requires -g)\n",
printf("Execution utility for Mininet\n\n"
"Usage: %s [-cdnp] [-a pid] [-g group] [-r rtprio] cmd args...\n\n"
"Options:\n"
" -c: close all file descriptors except stdin/out/error\n"
" -d: detach from tty by calling setsid()\n"
" -n: run in new network namespace\n"
" -p: print ^A + pid\n"
" -a pid: attach to pid's network namespace\n"
" -g group: add to cgroup\n"
" -r rtprio: run with SCHED_RR (usually requires -g)\n"
" -v: print version\n",
name);
}
@@ -92,7 +98,7 @@ int main(int argc, char *argv[])
int nsid;
int pid;
static struct sched_param sp;
while ((c = getopt(argc, argv, "+cdnpa:g:r:")) != -1)
while ((c = getopt(argc, argv, "+cdnpa:g:r:vh")) != -1)
switch(c) {
case 'c':
/* close file descriptors except stdin/out/error */
@@ -152,9 +158,15 @@ int main(int argc, char *argv[])
return 1;
}
break;
case 'v':
printf("%s\n", VERSION);
exit(0);
case 'h':
usage(argv[0]);
exit(0);
default:
usage(argv[0]);
break;
exit(1);
}
if (optind < argc) {