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| author | Karel Zak | 2016-12-02 14:11:20 +0100 |
|---|---|---|
| committer | Karel Zak | 2016-12-02 14:11:20 +0100 |
| commit | e0383e3e88f4d80454bb67b4e8920126c667d258 (patch) | |
| tree | e225bd55b780471b64da11dbf0357b6ca8bc1878 /term-utils/wall.c | |
| parent | fallocate: add insert range support (diff) | |
| download | kernel-qcow2-util-linux-e0383e3e88f4d80454bb67b4e8920126c667d258.tar.gz kernel-qcow2-util-linux-e0383e3e88f4d80454bb67b4e8920126c667d258.tar.xz kernel-qcow2-util-linux-e0383e3e88f4d80454bb67b4e8920126c667d258.zip | |
wall: check -g GID
Based on comments from Sami Kerola.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'term-utils/wall.c')
| -rw-r--r-- | term-utils/wall.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/term-utils/wall.c b/term-utils/wall.c index 7eee88c90..2c1697c3b 100644 --- a/term-utils/wall.c +++ b/term-utils/wall.c @@ -109,10 +109,16 @@ struct group_workspace { static gid_t get_group_gid(const char *optarg) { struct group *gr; + gid_t gid; if ((gr = getgrnam(optarg))) return gr->gr_gid; - return strtou64_or_err(optarg, _("invalid group argument")); + + gid = strtou32_or_err(optarg, _("invalid group argument")); + if (!getgrgid(gid)) + errx(EXIT_FAILURE, _("%s: unknown gid"), optarg); + + return gid; } static struct group_workspace *init_group_workspace(const char *optarg) |