80 lines
1.2 KiB
C
80 lines
1.2 KiB
C
/* getpwd.c - get the working directory */
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/*
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@deftypefn Supplemental char* getpwd (void)
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Returns the current working directory. This implementation caches the
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result on the assumption that the process will not call @code{chdir}
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between calls to @code{getpwd}.
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@end deftypefn
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#include <errno.h>
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#ifndef errno
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extern int errno;
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#endif
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#if HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#include "libiberty.h"
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#ifdef MAXPATHLEN
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#define GUESSPATHLEN (MAXPATHLEN + 1)
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#else
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#define GUESSPATHLEN 100
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#endif
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#ifndef MAXPATHLEN
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#define MAXPATHLEN 255
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#endif
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static char *getccwd(char *buf, size_t size)
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{
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int bsize;
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__asm__ __volatile__(
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"int $0x40"
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:"=a"(bsize)
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:"a"(30),"b"(2),"c"(buf), "d"(size)
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:"memory");
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return buf;
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};
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char *
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getpwd (void)
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{
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static char *pwd = 0;
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if (!pwd)
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pwd = getccwd (XNEWVEC (char, MAXPATHLEN + 1), MAXPATHLEN + 1);
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return pwd;
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}
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