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Teach ps(1) to parse pts TT values (i.e. '0', '1') for the -t flag.

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MFC after:	1 week
Reported by:	kris
This commit is contained in:
John Baldwin 2007-11-08 22:31:28 +00:00
parent 037347714a
commit 8a529f590f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=173492
1 changed files with 23 additions and 9 deletions
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32
bin/ps/ps.c
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@ -74,6 +74,8 @@ __FBSDID("$FreeBSD$");
#include "ps.h"
#define _PATH_PTS "/dev/pts/"
#define W_SEP " \t" /* "Whitespace" list separators */
#define T_SEP "," /* "Terminate-element" list separators */
@ -706,9 +708,9 @@ addelem_pid(struct listinfo *inf, const char *elem)
/*-
* The user can specify a device via one of three formats:
* 1) fully qualified, e.g.: /dev/ttyp0 /dev/console
* 2) missing "/dev", e.g.: ttyp0 console
* 3) two-letters, e.g.: p0 co
* 1) fully qualified, e.g.: /dev/ttyp0 /dev/console /dev/pts/0
* 2) missing "/dev", e.g.: ttyp0 console pts/0
* 3) two-letters, e.g.: p0 co 0
* (matching letters that would be seen in the "TT" column)
*/
static int
@ -716,10 +718,11 @@ addelem_tty(struct listinfo *inf, const char *elem)
{
const char *ttypath;
struct stat sb;
char pathbuf[PATH_MAX], pathbuf2[PATH_MAX];
char pathbuf[PATH_MAX], pathbuf2[PATH_MAX], pathbuf3[PATH_MAX];
ttypath = NULL;
pathbuf2[0] = '\0';
pathbuf3[0] = '\0';
switch (*elem) {
case '/':
ttypath = elem;
@ -736,6 +739,8 @@ addelem_tty(struct listinfo *inf, const char *elem)
ttypath = pathbuf;
if (strncmp(pathbuf, _PATH_TTY, strlen(_PATH_TTY)) == 0)
break;
if (strncmp(pathbuf, _PATH_PTS, strlen(_PATH_PTS)) == 0)
break;
if (strcmp(pathbuf, _PATH_CONSOLE) == 0)
break;
/* Check to see if /dev/tty${elem} exists */
@ -746,21 +751,30 @@ addelem_tty(struct listinfo *inf, const char *elem)
ttypath = NULL;
break;
}
/* Check to see if /dev/pts/${elem} exists */
strlcpy(pathbuf3, _PATH_PTS, sizeof(pathbuf3));
strlcat(pathbuf3, elem, sizeof(pathbuf3));
if (stat(pathbuf3, &sb) == 0 && S_ISCHR(sb.st_mode)) {
/* No need to repeat stat() && S_ISCHR() checks */
ttypath = NULL;
break;
}
break;
}
if (ttypath) {
if (stat(ttypath, &sb) == -1) {
if (pathbuf2[0] != '\0')
warn("%s and %s", pathbuf2, ttypath);
if (pathbuf3[0] != '\0')
warn("%s, %s, and %s", pathbuf3, pathbuf2,
ttypath);
else
warn("%s", ttypath);
optfatal = 1;
return (0);
}
if (!S_ISCHR(sb.st_mode)) {
if (pathbuf2[0] != '\0')
warnx("%s and %s: Not a terminal", pathbuf2,
ttypath);
if (pathbuf3[0] != '\0')
warnx("%s, %s, and %s: Not a terminal",
pathbuf3, pathbuf2, ttypath);
else
warnx("%s: Not a terminal", ttypath);
optfatal = 1;