version 1.36.2.3, 2006/01/01 23:12:36 |
version 1.37, 2005/07/04 20:44:47 |
|
|
realpath(const char *path, char *resolved) |
realpath(const char *path, char *resolved) |
{ |
{ |
struct stat sb; |
struct stat sb; |
int idx = 0, n, nlnk = 0; |
int idx = 0, n, nlnk = 0, serrno = errno; |
const char *q; |
const char *q; |
char *p, wbuf[2][MAXPATHLEN]; |
char *p, wbuf[2][MAXPATHLEN]; |
size_t len; |
size_t len; |
|
|
* target to unresolved path. |
* target to unresolved path. |
*/ |
*/ |
if (lstat(resolved, &sb) == -1) { |
if (lstat(resolved, &sb) == -1) { |
|
/* Allow nonexistent component if this is the last one. */ |
|
if ((*q == 0 || (*q == '/' && *(q + 1) == 0)) |
|
&& errno == ENOENT) { |
|
errno = serrno; |
|
return (resolved); |
|
} |
|
return (NULL); |
|
} |
|
if (*q == '/' && !S_ISDIR(sb.st_mode)) { |
|
errno = ENOTDIR; |
return (NULL); |
return (NULL); |
} |
} |
if (S_ISLNK(sb.st_mode)) { |
if (S_ISLNK(sb.st_mode)) { |
|
|
p = resolved; |
p = resolved; |
goto loop; |
goto loop; |
} |
} |
if (*q == '/' && !S_ISDIR(sb.st_mode)) { |
|
errno = ENOTDIR; |
|
return (NULL); |
|
} |
|
|
|
/* Advance both resolved and unresolved path. */ |
/* Advance both resolved and unresolved path. */ |
p += 1 + q - path; |
p += 1 + q - path; |