49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/*
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* Copyright (c) 2013, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* stdlib/realpath.c
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* Return the canonicalized filename.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <scram.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef PATH_MAX
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#error "This realpath implementation assumes no PATH_MAX"
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#endif
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char* realpath(const char* restrict path, char* restrict resolved_path)
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{
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if ( resolved_path )
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{
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struct scram_undefined_behavior info;
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info.filename = __FILE__;
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info.line = __LINE__;
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info.column = 0;
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info.violation = "realpath call with non-null argument and PATH_MAX unset";
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scram(SCRAM_UNDEFINED_BEHAVIOR, &info);
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}
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char* ret_path = canonicalize_file_name(path);
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if ( !ret_path )
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return NULL;
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return ret_path;
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}
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