mirror of
https://github.com/troglobit/libite.git
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81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/* Check if file exists
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*
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* Copyright (c) 2008 Claudio Matsuoka <http://helllabs.org/finit/>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <errno.h>
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#include <unistd.h>
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/**
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* fexist - Check if a file exists in the file system.
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* @file: File to look for, with full path.
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*
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* Returns:
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* %TRUE(1) if the file exists, otherwise %FALSE(0).
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*/
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int fexist(char *file)
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{
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if (!file) {
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errno = EINVAL;
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return 0; /* Doesn't exist ... */
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}
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if (-1 == access(file, F_OK))
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return 0;
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return 1;
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}
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#ifdef UNITTEST
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#include "lite.h"
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int main(void)
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{
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int i = 0;
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struct { char *file; int exist; } arr[] = {
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{ "/etc/passwd", 1 },
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{ "/etc/kalle", 0 },
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{ "/sbin/init", 1 },
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{ "/dev/null", 1 },
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{ NULL, 0 },
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};
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FILE *src, *dst;
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for (i = 0; i < NELEMS(arr); i++) {
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if (fexist(arr[i].file) != arr[i].exist)
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err(1, "Failed fexist(%s)", arr[i].file ?: "NULL");
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else
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printf("File %-11s %-14s => OK!\n", arr[i].file ?: "NULL",
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arr[i].exist ? "does exist" : "does not exist");
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}
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return 0;
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}
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#endif /* UNITTEST */
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/**
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* Local Variables:
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* compile-command: "make V=1 -f fexist.mk"
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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