diff options
| author | kris <kris@FreeBSD.org> | 2001-05-08 11:11:42 +0000 |
|---|---|---|
| committer | kris <kris@FreeBSD.org> | 2001-05-08 11:11:42 +0000 |
| commit | fd84041b002957f6614cb50c4a67060c64e1c99a (patch) | |
| tree | 9532defdcb053646c1d7f6e31ac37474a15ea1f0 /usr.bin/wall/wall.c | |
| parent | 38e4267af012d2f5d815736d6b2641f4c35bbbff (diff) | |
| download | FreeBSD-src-fd84041b002957f6614cb50c4a67060c64e1c99a.zip FreeBSD-src-fd84041b002957f6614cb50c4a67060c64e1c99a.tar.gz | |
When opening the file to broadcast, do it with the user's gid, not the
egid (tty).
Obtained from: OpenBSD
Submitted by: Maxime Henrion <mux@qualys.com>
Reviewed by: imp
Diffstat (limited to 'usr.bin/wall/wall.c')
| -rw-r--r-- | usr.bin/wall/wall.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/usr.bin/wall/wall.c b/usr.bin/wall/wall.c index 25cb786..96647df 100644 --- a/usr.bin/wall/wall.c +++ b/usr.bin/wall/wall.c @@ -189,6 +189,7 @@ makemsg(char *fname) int fd; char *p, *tty, hostname[MAXHOSTNAMELEN], lbuf[256], tmpname[64]; const char *whom; + gid_t egid; (void)snprintf(tmpname, sizeof(tmpname), "%s/wall.XXXXXX", _PATH_TMP); if ((fd = mkstemp(tmpname)) == -1 || !(fp = fdopen(fd, "r+"))) @@ -225,8 +226,13 @@ makemsg(char *fname) } (void)fprintf(fp, "%79s\r\n", " "); - if (fname && !(freopen(fname, "r", stdin))) - err(1, "can't read %s", fname); + if (fname) { + egid = getegid(); + setegid(getgid()); + if (freopen(fname, "r", stdin) == NULL) + err(1, "can't read %s", fname); + setegid(egid); + } while (fgets(lbuf, sizeof(lbuf), stdin)) for (cnt = 0, p = lbuf; (ch = *p) != '\0'; ++p, ++cnt) { if (ch == '\r') { |
