version 1.13, 1998/08/10 02:43:09 |
version 1.22, 1999/09/16 11:44:58 |
Line 49 __RCSID("$NetBSD$"); |
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Line 49 __RCSID("$NetBSD$"); |
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#include <sys/param.h> |
#include <sys/param.h> |
#include <sys/stat.h> |
#include <sys/stat.h> |
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#include <assert.h> |
#include <dirent.h> |
#include <dirent.h> |
#include <errno.h> |
#include <errno.h> |
#include <fcntl.h> |
#include <fcntl.h> |
Line 57 __RCSID("$NetBSD$"); |
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Line 58 __RCSID("$NetBSD$"); |
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#include <string.h> |
#include <string.h> |
#include <unistd.h> |
#include <unistd.h> |
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#include "extern.h" |
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#ifdef __weak_alias |
#ifdef __weak_alias |
__weak_alias(getcwd,_getcwd); |
__weak_alias(getcwd,_getcwd); |
__weak_alias(realpath,_realpath); |
__weak_alias(realpath,_realpath); |
Line 67 __weak_alias(realpath,_realpath); |
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Line 70 __weak_alias(realpath,_realpath); |
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(dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
(dp->d_name[1] == '.' && dp->d_name[2] == '\0'))) |
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#if defined(__SVR4) || defined(__svr4__) |
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#define d_fileno d_ino |
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#endif |
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/* |
/* |
* char *realpath(const char *path, char resolved_path[MAXPATHLEN]); |
* char *realpath(const char *path, char resolved_path[MAXPATHLEN]); |
* |
* |
Line 80 realpath(path, resolved) |
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Line 87 realpath(path, resolved) |
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char *resolved; |
char *resolved; |
{ |
{ |
struct stat sb; |
struct stat sb; |
int fd, n, rootd, serrno; |
int fd, n, rootd, serrno, nlnk = 0; |
char *p, *q, wbuf[MAXPATHLEN]; |
char *p, *q, wbuf[MAXPATHLEN]; |
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_DIAGASSERT(path != NULL); |
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_DIAGASSERT(resolved != NULL); |
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#ifdef _DIAGNOSTIC |
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if (path == NULL || *path == '\0') { |
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errno = ENOENT; |
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return (NULL); |
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} |
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if (resolved == NULL) { |
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errno = EINVAL; |
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return (NULL); |
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} |
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#endif |
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/* Save the starting point. */ |
/* Save the starting point. */ |
if ((fd = open(".", O_RDONLY)) < 0) { |
if ((fd = open(".", O_RDONLY)) < 0) { |
(void)strcpy(resolved, "."); |
(void)strcpy(resolved, "."); |
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/* Deal with the last component. */ |
/* Deal with the last component. */ |
if (lstat(p, &sb) == 0) { |
if (lstat(p, &sb) == 0) { |
if (S_ISLNK(sb.st_mode)) { |
if (S_ISLNK(sb.st_mode)) { |
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if (nlnk++ >= MAXSYMLINKS) { |
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errno = ELOOP; |
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goto err1; |
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} |
n = readlink(p, resolved, MAXPATHLEN); |
n = readlink(p, resolved, MAXPATHLEN); |
if (n < 0) |
if (n < 0) |
goto err1; |
goto err1; |
Line 182 err2: (void)close(fd); |
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Line 206 err2: (void)close(fd); |
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return (NULL); |
return (NULL); |
} |
} |
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#ifdef OLD_GETCWD |
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char * |
char * |
getcwd(pt, size) |
getcwd(pt, size) |
char *pt; |
char *pt; |
Line 199 getcwd(pt, size) |
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Line 225 getcwd(pt, size) |
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size_t ptsize, upsize; |
size_t ptsize, upsize; |
int save_errno; |
int save_errno; |
char *ept, *eup, *up; |
char *ept, *eup, *up; |
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size_t dlen; |
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/* |
/* |
* If no buffer specified by the user, allocate one as necessary. |
* If no buffer specified by the user, allocate one as necessary. |
Line 257 getcwd(pt, size) |
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Line 284 getcwd(pt, size) |
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* path to the beginning of the buffer, but it's always |
* path to the beginning of the buffer, but it's always |
* been that way and stuff would probably break. |
* been that way and stuff would probably break. |
*/ |
*/ |
memcpy(pt, bpt, (size_t)(ept - bpt)); |
memmove(pt, bpt, (size_t)(ept - bpt)); |
free(up); |
free(up); |
return (pt); |
return (pt); |
} |
} |
Line 294 getcwd(pt, size) |
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Line 321 getcwd(pt, size) |
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for (;;) { |
for (;;) { |
if (!(dp = readdir(dir))) |
if (!(dp = readdir(dir))) |
goto notfound; |
goto notfound; |
if (dp->d_fileno == ino) |
if (dp->d_fileno == ino) { |
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#if defined(__SVR4) || defined(__svr4__) || defined(__linux__) |
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dlen = strlen(dp->d_name); |
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#else |
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dlen = dp->d_namlen; |
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#endif |
break; |
break; |
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} |
} |
} |
} else |
} else |
for (;;) { |
for (;;) { |
Line 303 getcwd(pt, size) |
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Line 336 getcwd(pt, size) |
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goto notfound; |
goto notfound; |
if (ISDOT(dp)) |
if (ISDOT(dp)) |
continue; |
continue; |
memcpy(bup, dp->d_name, |
#if defined(__SVR4) || defined(__svr4__) || defined(__linux__) |
(size_t)(dp->d_namlen + 1)); |
dlen = strlen(dp->d_name); |
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#else |
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dlen = dp->d_namlen; |
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#endif |
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memmove(bup, dp->d_name, dlen + 1); |
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/* Save the first error for later. */ |
/* Save the first error for later. */ |
if (lstat(up, &s)) { |
if (lstat(up, &s)) { |
Line 321 getcwd(pt, size) |
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Line 358 getcwd(pt, size) |
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* Check for length of the current name, preceding slash, |
* Check for length of the current name, preceding slash, |
* leading slash. |
* leading slash. |
*/ |
*/ |
if (bpt - pt <= dp->d_namlen + (first ? 1 : 2)) { |
if (bpt - pt <= dlen + (first ? 1 : 2)) { |
size_t len, off; |
size_t len, off; |
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if (!ptsize) { |
if (!ptsize) { |
Line 334 getcwd(pt, size) |
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Line 371 getcwd(pt, size) |
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goto err; |
goto err; |
bpt = pt + off; |
bpt = pt + off; |
ept = pt + ptsize; |
ept = pt + ptsize; |
memcpy(ept - len, bpt, len); |
memmove(ept - len, bpt, len); |
bpt = ept - len; |
bpt = ept - len; |
} |
} |
if (!first) |
if (!first) |
*--bpt = '/'; |
*--bpt = '/'; |
bpt -= dp->d_namlen; |
bpt -= dlen; |
memcpy(bpt, dp->d_name, (size_t)dp->d_namlen); |
memmove(bpt, dp->d_name, dlen); |
(void)closedir(dir); |
(void)closedir(dir); |
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/* Truncate any file name. */ |
/* Truncate any file name. */ |
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free(up); |
free(up); |
return (NULL); |
return (NULL); |
} |
} |
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#else /* New getcwd */ |
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char * |
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getcwd(pt, size) |
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char *pt; |
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size_t size; |
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{ |
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size_t ptsize, bufsize; |
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int len; |
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/* |
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* If no buffer specified by the user, allocate one as necessary. |
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* If a buffer is specified, the size has to be non-zero. The path |
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* is built from the end of the buffer backwards. |
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*/ |
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if (pt) { |
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ptsize = 0; |
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if (!size) { |
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errno = EINVAL; |
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return (NULL); |
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} |
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bufsize = size; |
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} else { |
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if ((pt = malloc(ptsize = 1024 - 4)) == NULL) |
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return (NULL); |
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bufsize = ptsize; |
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} |
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for (;;) { |
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len = __getcwd(pt, bufsize); |
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if ((len < 0) && (size == 0) && (errno == ERANGE)) { |
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if (ptsize > (MAXPATHLEN*4)) |
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return NULL; |
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if ((pt = realloc(pt, ptsize *= 2)) == NULL) |
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return NULL; |
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bufsize = ptsize; |
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continue; |
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} |
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break; |
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} |
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if (len < 0) |
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return NULL; |
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else |
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return pt; |
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} |
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#endif |