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Add -u option to ipcs(1) and document it in ipcs.1

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It allows you to list IPC facilities owned by username/uid.

Submitted by: Christian S.J. Peron <maneo@bsdpro.com>
PR: bin/63463
This commit is contained in:
Bosko Milekic 2004-03-24 04:01:43 +00:00
parent a832f947f3
commit 4d2e8e5fb8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=127348
2 changed files with 39 additions and 3 deletions
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5
usr.bin/ipcs/ipcs.1
View File

@ -131,6 +131,11 @@ using
.Xr kvm 3
will require read privileges to
.Pa /dev/kmem .
.It Fl u Ar user
Display information about IPC mechanisms owned by
.Pa user .
User specification can be in the form of a numeric UID or
a login name.
.El
.Pp
If none of the

37
usr.bin/ipcs/ipcs.c
View File

@ -74,6 +74,7 @@ void cvt_time(time_t, char *);
void sysctlgatherstruct(void *addr, size_t size, struct scgs_vector *vec);
void kget(int idx, void *addr, size_t size);
void usage(void);
uid_t user2uid(char *username);
static struct nlist symbols[] = {
{"sema"},
@ -188,11 +189,12 @@ main(argc, argv)
{
int display = SHMINFO | MSGINFO | SEMINFO;
int option = 0;
char *core = NULL, *namelist = NULL;
char *core = NULL, *user = NULL, *namelist = NULL;
char kvmoferr[_POSIX2_LINE_MAX]; /* Error buf for kvm_openfiles. */
int i;
uid_t uid;
while ((i = getopt(argc, argv, "MmQqSsabC:cN:optTy")) != -1)
while ((i = getopt(argc, argv, "MmQqSsabC:cN:optTu:y")) != -1)
switch (i) {
case 'M':
display = SHMTOTAL;
@ -242,6 +244,10 @@ main(argc, argv)
case 'y':
use_sysctl = 0;
break;
case 'u':
user = optarg;
uid = user2uid(user);
break;
default:
usage();
}
@ -320,6 +326,9 @@ main(argc, argv)
ctime_buf[100];
struct msqid_ds *msqptr = &xmsqids[i];
if (user)
if (uid != msqptr->msg_perm.uid)
continue;
cvt_time(msqptr->msg_stime, stime_buf);
cvt_time(msqptr->msg_rtime, rtime_buf);
cvt_time(msqptr->msg_ctime, ctime_buf);
@ -409,6 +418,9 @@ main(argc, argv)
ctime_buf[100];
struct shmid_ds *shmptr = &xshmids[i];
if (user)
if (uid != shmptr->shm_perm.uid)
continue;
cvt_time(shmptr->shm_atime, atime_buf);
cvt_time(shmptr->shm_dtime, dtime_buf);
cvt_time(shmptr->shm_ctime, ctime_buf);
@ -502,6 +514,9 @@ main(argc, argv)
char ctime_buf[100], otime_buf[100];
struct semid_ds *semaptr = &xsema[i];
if (user)
if (uid != semaptr->sem_perm.uid)
continue;
cvt_time(semaptr->sem_otime, otime_buf);
cvt_time(semaptr->sem_ctime, ctime_buf);
@ -649,11 +664,27 @@ kget(idx, addr, size)
}
}
uid_t
user2uid(char *username)
{
struct passwd *pwd;
uid_t uid;
char *r;
uid = strtoul(username, &r, 0);
if (!*r && r != username)
return (uid);
if ((pwd = getpwnam(username)) == NULL)
errx(1, "getpwnam failed: No such user");
endpwent();
return (pwd->pw_uid);
}
void
usage()
{
fprintf(stderr,
"usage: ipcs [-abcmopqstyMQST] [-C corefile] [-N namelist]\n");
"usage: ipcs [-abcmopqstyMQST] [-C corefile] [-N namelist] [-u user]\n");
exit(1);
}