diff options
Diffstat (limited to 'src/su.c')
| -rw-r--r-- | src/su.c | 27 |
1 files changed, 27 insertions, 0 deletions
@@ -73,6 +73,7 @@ #include <getopt.h> #include <sys/types.h> #include <pwd.h> +#include <grp.h> #include "system.h" #ifdef HAVE_SYSLOG_H @@ -115,6 +116,8 @@ uid_t getuid (); #include <shadow.h> #endif +#include "version.h" + /* The default PATH for simulated logins to non-superuser accounts. */ #define DEFAULT_LOGIN_PATH ":/usr/ucb:/bin:/usr/bin" @@ -153,6 +156,12 @@ extern char **environ; /* The name this program was run with. */ char *program_name; +/* If non-zero, display usage information and exit. */ +static int show_help; + +/* If non-zero, print the version on standard output and exit. */ +static int show_version; + /* If nonzero, pass the `-f' option to the subshell. */ static int fast_startup; @@ -166,9 +175,11 @@ static struct option const longopts[] = { {"command", required_argument, 0, 'c'}, {"fast", no_argument, &fast_startup, 1}, + {"help", no_argument, &show_help, 1}, {"login", no_argument, &simulate_login, 1}, {"preserve-environment", no_argument, &change_environment, 0}, {"shell", required_argument, 0, 's'}, + {"version", no_argument, &show_version, 1}, {0, 0, 0, 0} }; @@ -196,26 +207,42 @@ main (argc, argv) { case 0: break; + case 'c': command = optarg; break; + case 'f': fast_startup = 1; break; + case 'l': simulate_login = 1; break; + case 'm': case 'p': change_environment = 0; break; + case 's': shell = optarg; break; + default: usage (); } } + + if (show_version) + { + printf ("%s\n", version_string); + exit (0); + } + + if (show_help) + usage (); + if (optind < argc && !strcmp (argv[optind], "-")) { simulate_login = 1; |