6da879de22
include/ 2005-03-27 Gabriel Dos Reis <gdr@integrable-solutions.net> * md5.h: Remove definition and uses of __P. * dyn-string.h: Remove uses of PARAMS. * fibheap.h: Likewise. * floatformat.h: Likewise. * hashtab.h: Likewise. libiberty/ 2005-03-27 Gabriel Dos Reis <gdr@integrable-solutions.net> Convert libiberty to use ISO C prototype style 4/n. * hashtab.c (higher_prime_index, hash_pointer, eq_pointer, htab_size, htab_elements, htab_mod_1, htab_mod, htab_mod_m2, htab_create_alloc, htab_set_functions_ex, htab_create, htab_try_create, htab_delete, htab_empty, find_empty_slot_for_expand, htab_expand, htab_find_with_hash, htab_find, htab_find_slot_with_hash, htab_find_slot, htab_remove_elt, htab_remove_elt_with_hash, htab_clear_slot, htab_traverse_noresize, htab_traverse, htab_collisions, htab_hash_string, iterative_hash): Use ISO C prototype. * hex.c (hex_init): Likewise. * index.c (index): Likewise. * insque.c (insque, remque): Likewise. * lbasename.c (lbasename): Likewise. * lrealpath.c (lrealpath): Likewise. * make-relative-prefix.c (save_string, split_directories, free_split_directories, make_relative_prefix): Likewise. * make-temp-file.c (try, choose_tmpdir, make_temp_file): Likewise. * md5.c (md5_init_ctx, md5_read_ctx, md5_finish_ctx, md5_stream, md5_buffer, md5_process_bytes, md5_process_block): Likewise. * memchr.c (memchr): Likewise. * memcpy.c (memcpy): Likewise. * memmove.c (memmove): Likewise. * gettimeofday.c (gettimeofday): Likewise. * getruntime.c (get_run_time): Likewise. * getpwd.c (getpwd, getpwd): Likewise. * getpagesize.c (getpagesize): Likewise. * getopt1.c (getopt_long, getopt_long_only, main): Likewise. * getopt.c (my_index, exchange, _getopt_initialize, _getopt_internal, getopt, main): Likewise. * getcwd.c (getcwd): Likewise. * fnmatch.c (fnmatch): Likewise. * floatformat.c (floatformat_always_valid, floatformat_i387_ext_is_valid, get_field, floatformat_to_double, put_field, floatformat_from_double, floatformat_is_valid, ieee_test, main): Likewise. * fibheap.c (fibheap_new, fibnode_new, fibheap_compare, fibheap_comp_data, fibheap_insert, fibheap_min, fibheap_min_key, fibheap_union, fibheap_extract_min, fibheap_replace_key_data, fibheap_replace_key, fibheap_replace_data, fibheap_delete_node, fibheap_delete, fibheap_empty, fibheap_extr_min_node, fibheap_ins_root, fibheap_rem_root, fibheap_consolidate, fibheap_link, fibheap_cut, fibheap_cascading_cut, fibnode_insert_after, fibnode_remove): Likewise. * ffs.c (ffs): Likewise. * fdmatch.c (fdmatch): Likewise. * dyn-string.c (dyn_string_init, dyn_string_new, dyn_string_delete, dyn_string_release, dyn_string_resize, dyn_string_clear, dyn_string_copy, dyn_string_copy_cstr, dyn_string_prepend, dyn_string_prepend_cstr, dyn_string_insert, dyn_string_insert_cstr, dyn_string_insert_char, dyn_string_append, dyn_string_append_cstr, dyn_string_append_char, dyn_string_substring, dyn_string_eq): Likewise. From-SVN: r97113
131 lines
2.6 KiB
C
131 lines
2.6 KiB
C
/* getpwd.c - get the working directory */
|
|
|
|
/*
|
|
|
|
@deftypefn Supplemental char* getpwd (void)
|
|
|
|
Returns the current working directory. This implementation caches the
|
|
result on the assumption that the process will not call @code{chdir}
|
|
between calls to @code{getpwd}.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <errno.h>
|
|
#ifndef errno
|
|
extern int errno;
|
|
#endif
|
|
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#endif
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_PARAM_H
|
|
#include <sys/param.h>
|
|
#endif
|
|
#if HAVE_SYS_STAT_H
|
|
#include <sys/stat.h>
|
|
#endif
|
|
#if HAVE_LIMITS_H
|
|
#include <limits.h>
|
|
#endif
|
|
|
|
/* Prototype these in case the system headers don't provide them. */
|
|
extern char *getpwd ();
|
|
extern char *getwd ();
|
|
|
|
#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)
|
|
#define getcwd(buf,len) getwd(buf)
|
|
#endif
|
|
|
|
#ifdef MAXPATHLEN
|
|
#define GUESSPATHLEN (MAXPATHLEN + 1)
|
|
#else
|
|
#define GUESSPATHLEN 100
|
|
#endif
|
|
|
|
#if !(defined (VMS) || (defined(_WIN32) && !defined(__CYGWIN__)))
|
|
|
|
/* 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 *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 || _WIN32 && !__CYGWIN__ */
|
|
|
|
#ifndef MAXPATHLEN
|
|
#define MAXPATHLEN 255
|
|
#endif
|
|
|
|
char *
|
|
getpwd (void)
|
|
{
|
|
static char *pwd = 0;
|
|
|
|
if (!pwd)
|
|
pwd = getcwd (xmalloc (MAXPATHLEN + 1), MAXPATHLEN + 1
|
|
#ifdef VMS
|
|
, 0
|
|
#endif
|
|
);
|
|
return pwd;
|
|
}
|
|
|
|
#endif /* VMS || _WIN32 && !__CYGWIN__ */
|