| 41,16 → 41,7 |
|---|
| |
| #include "libiberty.h" |
| |
| /* 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(HAVE_GETCWD) && defined(HAVE_GETWD) |
| /* Prototype in case the system headers doesn't provide it. */ |
| extern char *getwd (); |
| #define getcwd(buf,len) getwd(buf) |
| #endif |
| |
| #ifdef MAXPATHLEN |
| #define GUESSPATHLEN (MAXPATHLEN + 1) |
| #else |
| 57,60 → 48,23 |
|---|
| #define GUESSPATHLEN 100 |
| #endif |
| |
| #if !(defined (VMS) || (defined(_WIN32) && !defined(__CYGWIN__))) |
| #ifndef MAXPATHLEN |
| #define MAXPATHLEN 255 |
| #endif |
| |
| /* 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 (void) |
| static char *getccwd(char *buf, size_t size) |
| { |
| static char *pwd; |
| static int failure_errno; |
| int bsize; |
| __asm__ __volatile__( |
| "int $0x40" |
| :"=a"(bsize) |
| :"a"(30),"b"(2),"c"(buf), "d"(size) |
| :"memory"); |
| |
| char *p = pwd; |
| size_t s; |
| struct stat dotstat, pwdstat; |
| return buf; |
| }; |
| |
| 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 = XNEWVEC (char, 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 || _WIN32 && !__CYGWIN__ */ |
| |
| #ifndef MAXPATHLEN |
| #define MAXPATHLEN 255 |
| #endif |
| |
| char * |
| getpwd (void) |
| { |
| 117,12 → 71,9 |
|---|
| static char *pwd = 0; |
| |
| if (!pwd) |
| pwd = getcwd (XNEWVEC (char, MAXPATHLEN + 1), MAXPATHLEN + 1 |
| #ifdef VMS |
| , 0 |
| #endif |
| ); |
| pwd = getccwd (XNEWVEC (char, MAXPATHLEN + 1), MAXPATHLEN + 1); |
| |
| return pwd; |
| } |
| |
| #endif /* VMS || _WIN32 && !__CYGWIN__ */ |
| |