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Set errno to 0 before getpwuid() and check it afterwards - slock - simple X dis… |
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git clone git://git.suckless.org/slock |
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--- |
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commit 6a5512835485ac501d983161ca15b311a95c5649 |
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parent ba3acfc0dcf1d0603bd9d6bdee1e319339b1a509 |
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Author: sin <[email protected]> |
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Date: Thu, 14 Nov 2013 11:24:08 +0000 |
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Set errno to 0 before getpwuid() and check it afterwards |
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Diffstat: |
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M slock.c | 5 ++++- |
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1 file changed, 4 insertions(+), 1 deletion(-) |
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--- |
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diff --git a/slock.c b/slock.c |
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@@ -65,8 +65,11 @@ getpw(void) { /* only run as root */ |
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const char *rval; |
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struct passwd *pw; |
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+ errno = 0; |
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pw = getpwuid(getuid()); |
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- if(!pw) |
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+ if (errno) |
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+ die("slock: getpwuid: %s\n", strerror(errno)); |
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+ else if (!pw) |
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die("slock: cannot retrieve password entry (make sure to suid … |
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endpwent(); |
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rval = pw->pw_passwd; |
