kill: check errno after strto..()
Addresses: https://github.com/karelzak/util-linux/issues/1356 Signed-off-by: Karel Zak <kzak@redhat.com>
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@ -176,10 +176,11 @@ static int arg_to_signum(char *arg, int maskbit)
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char *ep;
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if (isdigit(*arg)) {
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errno = 0;
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numsig = strtol(arg, &ep, 10);
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if (NSIG <= numsig && maskbit && (numsig & 128) != 0)
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numsig -= 128;
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if (*ep != 0 || numsig < 0 || NSIG <= numsig)
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if (errno || *ep != 0 || numsig < 0 || NSIG <= numsig)
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return -1;
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return numsig;
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}
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