98aefe8772
'endptr' is appropriate internally in strtol(3) because it's a pointer to 'end', and 'end' itself is a pointer to one-after-the-last character of the numeric string. In other words, endptr == &end However, naming the pointer whose address we pass to strtol(3)'s 'endptr' feels wrong, and causes me trouble while parsing the code; I need to double check the number of dereferences, because something feels wrong in my head. Signed-off-by: Alejandro Colomar <alx@kernel.org>
35 lines
505 B
C
35 lines
505 B
C
/*
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* SPDX-FileCopyrightText: 2009 , Nicolas François
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <config.h>
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#ident "$Id$"
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#include "prototypes.h"
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#include "defines.h"
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int
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get_gid(const char *gidstr, gid_t *gid)
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{
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char *end;
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long long val;
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errno = 0;
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val = strtoll(gidstr, &end, 10);
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if ( ('\0' == *gidstr)
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|| ('\0' != *end)
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|| (0 != errno)
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|| (/*@+longintegral@*/val != (gid_t)val)/*@=longintegral@*/) {
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return -1;
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}
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*gid = val;
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return 0;
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}
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