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| author | Yuriy M. Kaminskiy | 2016-02-27 17:27:29 +0100 |
|---|---|---|
| committer | Karel Zak | 2016-03-07 15:11:06 +0100 |
| commit | 06fa5817489adb9728f8a29d4cb7602fb48b8bdb (patch) | |
| tree | b3a6f1d0db6b1a6d0e340c1297f243c07c1de618 /term-utils/agetty.c | |
| parent | lsns.c: fix error return (diff) | |
| download | kernel-qcow2-util-linux-06fa5817489adb9728f8a29d4cb7602fb48b8bdb.tar.gz kernel-qcow2-util-linux-06fa5817489adb9728f8a29d4cb7602fb48b8bdb.tar.xz kernel-qcow2-util-linux-06fa5817489adb9728f8a29d4cb7602fb48b8bdb.zip | |
misc: safer (and uniform) handling of return value
When `rc` is `INT_MAX`, `rc + 1` result in signed integer overflow.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'term-utils/agetty.c')
| -rw-r--r-- | term-utils/agetty.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/term-utils/agetty.c b/term-utils/agetty.c index d88cdc1c0..55a00e125 100644 --- a/term-utils/agetty.c +++ b/term-utils/agetty.c @@ -1001,8 +1001,8 @@ static void open_tty(char *tty, struct termios *tp, struct options *op) if ((gr = getgrnam("tty"))) gid = gr->gr_gid; - if (((len = snprintf(buf, sizeof(buf), "/dev/%s", tty)) >= - (int)sizeof(buf)) || (len < 0)) + len = snprintf(buf, sizeof(buf), "/dev/%s", tty); + if (len < 0 || (size_t)len >= sizeof(buf)) log_err(_("/dev/%s: cannot open as standard input: %m"), tty); /* Open the tty as standard input. */ |