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Only check errno if getpwnam() fails

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sin 2014-08-18 21:49:22 +01:00
parent e4677f290b
commit 6af24e35f9
1 changed files with 7 additions and 5 deletions
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12
login.c
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@ -74,13 +74,15 @@ main(int argc, char *argv[])
if (isatty(STDIN_FILENO) == 0) if (isatty(STDIN_FILENO) == 0)
eprintf("stdin is not a tty\n"); eprintf("stdin is not a tty\n");
errno = 0;
user = argv[0]; user = argv[0];
errno = 0;
pw = getpwnam(user); pw = getpwnam(user);
if (errno) if (!pw) {
eprintf("getpwnam: %s:", user); if (errno)
else if (!pw) eprintf("getpwnam: %s:", user);
eprintf("who are you?\n"); else
eprintf("who are you?\n");
}
uid = pw->pw_uid; uid = pw->pw_uid;
gid = pw->pw_gid; gid = pw->pw_gid;