diff options
Diffstat (limited to 'gcc/getpwd.c')
-rw-r--r-- | gcc/getpwd.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/gcc/getpwd.c b/gcc/getpwd.c deleted file mode 100644 index e48b277b95a..00000000000 --- a/gcc/getpwd.c +++ /dev/null @@ -1,98 +0,0 @@ -/* getpwd.c - get the working directory */ - -#include "config.h" - -#include <errno.h> -#include <sys/types.h> -#include <sys/stat.h> - -#ifndef errno -extern int errno; -#endif - -/* Virtually every UN*X system now in common use (except for pre-4.3-tahoe - BSD systems) now provides getcwd as called for by POSIX. Allow for - the few exceptions to the general rule here. */ - -#if !(defined (POSIX) || defined (USG) || defined (VMS)) || defined (HAVE_GETWD) -#include <sys/param.h> -extern char *getwd (); -#define getcwd(buf,len) getwd(buf) -#ifdef MAXPATHLEN -#define GUESSPATHLEN (MAXPATHLEN + 1) -#else -#define GUESSPATHLEN 100 -#endif -#else /* (defined (USG) || defined (VMS)) */ -extern char *getcwd (); -/* We actually use this as a starting point, not a limit. */ -#define GUESSPATHLEN 100 -#endif /* (defined (USG) || defined (VMS)) */ - -char *getenv (); -char *xmalloc (); - -#ifndef VMS - -/* Get the working directory. Use the PWD environment variable if it's - set correctly, since this is faster and gives more uniform answers - to the user. Yield the working directory if successful; otherwise, - yield 0 and set errno. */ - -char * -getpwd () -{ - static char *pwd; - static int failure_errno; - - char *p = pwd; - size_t s; - struct stat dotstat, pwdstat; - - if (!p && !(errno = failure_errno)) - { - if (! ((p = getenv ("PWD")) != 0 - && *p == '/' - && stat (p, &pwdstat) == 0 - && stat (".", &dotstat) == 0 - && dotstat.st_ino == pwdstat.st_ino - && dotstat.st_dev == pwdstat.st_dev)) - - /* The shortcut didn't work. Try the slow, ``sure'' way. */ - for (s = GUESSPATHLEN; ! getcwd (p = xmalloc (s), s); s *= 2) - { - int e = errno; - free (p); -#ifdef ERANGE - if (e != ERANGE) -#endif - { - errno = failure_errno = e; - p = 0; - break; - } - } - - /* Cache the result. This assumes that the program does - not invoke chdir between calls to getpwd. */ - pwd = p; - } - return p; -} - -#else /* VMS */ - -#ifndef MAXPATHLEN -#define MAXPATHLEN 255 -#endif - -char * -getpwd () -{ - static char *pwd = 0; - - if (!pwd) pwd = getcwd (xmalloc (MAXPATHLEN+1), MAXPATHLEN+1); - return pwd; -} - -#endif /* VMS */ |