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users: new applet.

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Signed-off-by: Tito Ragusa <farmatito@tiscali.it>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Tito Ragusa 2011-08-09 04:37:50 +02:00 committed by Denys Vlasenko
parent d91b13806f
commit 7926b98949
2 changed files with 62 additions and 35 deletions
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7
coreutils/Config.src
View File

@ -725,13 +725,6 @@ config FEATURE_WC_LARGE
help
Use "unsigned long long" in wc for counter variables.
config WHO
bool "who"
default y
depends on FEATURE_UTMP
help
who is used to show who is logged on.
config WHOAMI
bool "whoami"
default y

90
coreutils/who.c
View File

@ -18,6 +18,31 @@
*/
/* BB_AUDIT SUSv3 _NOT_ compliant -- missing options -b, -d, -l, -m, -p, -q, -r, -s, -t, -T, -u; Missing argument 'file'. */
//config:config WHO
//config: bool "who"
//config: default y
//config: depends on FEATURE_UTMP
//config: help
//config: who is used to show who is logged on.
//config:config USERS
//config: bool "users"
//config: default y
//config: depends on FEATURE_UTMP
//config: help
//config: Print users currently logged on.
//applet:IF_USERS(APPLET_ODDNAME(users, who, BB_DIR_USR_BIN, BB_SUID_DROP, users))
//applet:IF_WHO( APPLET( who, BB_DIR_USR_BIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_USERS) += who.o
//kbuild:lib-$(CONFIG_WHO) += who.o
//usage:#define users_trivial_usage
//usage: ""
//usage:#define users_full_usage "\n\n"
//usage: "Print the users currently logged on"
//usage:#define who_trivial_usage
//usage: "[-a]"
//usage:#define who_full_usage "\n\n"
@ -49,9 +74,11 @@ int who_main(int argc UNUSED_PARAM, char **argv)
{
struct utmp *ut;
unsigned opt;
int do_users = (ENABLE_USERS && (!ENABLE_WHO || applet_name[0] == 'u'));
const char *fmt = "%s";
opt_complementary = "=0";
opt = getopt32(argv, "aH");
opt = getopt32(argv, do_users ? "" : "aH");
if (opt & 2) // -H
printf("USER\t\tTTY\t\tIDLE\tTIME\t\t HOST\n");
@ -60,36 +87,43 @@ int who_main(int argc UNUSED_PARAM, char **argv)
if (ut->ut_user[0]
&& ((opt & 1) || ut->ut_type == USER_PROCESS)
) {
char str6[6];
char name[sizeof("/dev/") + sizeof(ut->ut_line) + 1];
struct stat st;
time_t seconds;
if (!do_users) {
char str6[6];
char name[sizeof("/dev/") + sizeof(ut->ut_line) + 1];
struct stat st;
time_t seconds;
str6[0] = '?';
str6[1] = '\0';
strcpy(name, "/dev/");
safe_strncpy(ut->ut_line[0] == '/' ? name : name + sizeof("/dev/")-1,
ut->ut_line,
sizeof(ut->ut_line)+1
);
if (stat(name, &st) == 0)
idle_string(str6, st.st_atime);
/* manpages say ut_tv.tv_sec *is* time_t,
* but some systems have it wrong */
seconds = ut->ut_tv.tv_sec;
/* How wide time field can be?
* "Nov 10 19:33:20": 15 chars
* "2010-11-10 19:33": 16 chars
*/
printf("%-15.*s %-15.*s %-7s %-16.16s %.*s\n",
(int)sizeof(ut->ut_user), ut->ut_user,
(int)sizeof(ut->ut_line), ut->ut_line,
str6,
ctime(&seconds) + 4,
(int)sizeof(ut->ut_host), ut->ut_host
);
str6[0] = '?';
str6[1] = '\0';
strcpy(name, "/dev/");
safe_strncpy(ut->ut_line[0] == '/' ? name : name + sizeof("/dev/")-1,
ut->ut_line,
sizeof(ut->ut_line)+1
);
if (stat(name, &st) == 0)
idle_string(str6, st.st_atime);
/* manpages say ut_tv.tv_sec *is* time_t,
* but some systems have it wrong */
seconds = ut->ut_tv.tv_sec;
/* How wide time field can be?
* "Nov 10 19:33:20": 15 chars
* "2010-11-10 19:33": 16 chars
*/
printf("%-15.*s %-15.*s %-7s %-16.16s %.*s\n",
(int)sizeof(ut->ut_user), ut->ut_user,
(int)sizeof(ut->ut_line), ut->ut_line,
str6,
ctime(&seconds) + 4,
(int)sizeof(ut->ut_host), ut->ut_host
);
} else {
printf(fmt, ut->ut_user);
fmt = " %s";
}
}
}
if (do_users)
bb_putchar('\n');
if (ENABLE_FEATURE_CLEAN_UP)
endutent();
return EXIT_SUCCESS;