mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-19 06:29:00 +08:00
53 lines
975 B
C
53 lines
975 B
C
|
/* Emulate getcwd using getwd.
|
||
|
|
This function is in the public domain. */
|
||
|
|
|
||
|
|
/*
|
||
|
|
NAME
|
||
|
|
getcwd -- get absolute pathname for current working directory
|
||
|
|
|
||
|
|
SYNOPSIS
|
||
|
|
char *getcwd (char pathname[len], len)
|
||
|
|
|
||
|
|
DESCRIPTION
|
||
|
|
Copy the absolute pathname for the current working directory into
|
||
|
|
the supplied buffer and return a pointer to the buffer. If the
|
||
|
|
current directory's path doesn't fit in LEN characters, the result
|
||
|
|
is NULL and errno is set.
|
||
|
|
|
||
|
|
BUGS
|
||
|
|
Emulated via the getwd() call, which is reasonable for most
|
||
|
|
systems that do not have getcwd().
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef NO_SYS_PARAM_H
|
||
|
|
#include <sys/param.h>
|
||
|
|
#endif
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
extern char *getwd ();
|
||
|
|
extern int errno;
|
||
|
|
|
||
|
|
#ifndef MAXPATHLEN
|
||
|
|
#define MAXPATHLEN 1024
|
||
|
|
#endif
|
||
|
|
|
||
|
|
char *
|
||
|
|
getcwd (buf, len)
|
||
|
|
char *buf;
|
||
|
|
int len;
|
||
|
|
{
|
||
|
|
char ourbuf[MAXPATHLEN];
|
||
|
|
char *result;
|
||
|
|
|
||
|
|
result = getwd (ourbuf);
|
||
|
|
if (result) {
|
||
|
|
if (strlen (ourbuf) >= len) {
|
||
|
|
errno = ERANGE;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
strcpy (buf, ourbuf);
|
||
|
|
}
|
||
|
|
return buf;
|
||
|
|
}
|