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author | Roland McGrath <roland@gnu.org> | 1999-11-13 23:52:38 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1999-11-13 23:52:38 +0000 |
commit | 0bd019279b29e72861ba57e6101afa5e6dafb3a5 (patch) | |
tree | 9c89dfd0f45958c30c82d3a5097cf5feaf96bd95 /hurd/hurdlookup.c | |
parent | 28f08f3fd1c20c4352746839c242d3a7776041a6 (diff) | |
download | glibc-0bd019279b29e72861ba57e6101afa5e6dafb3a5.zip glibc-0bd019279b29e72861ba57e6101afa5e6dafb3a5.tar.gz glibc-0bd019279b29e72861ba57e6101afa5e6dafb3a5.tar.bz2 |
* Versions.def (libc): Move GLIBC_2.2 dependency from GLIBC_2.1.1 to
GLIBC_2.1.3.
1999-11-13 Roland McGrath <roland@baalperazim.frob.com>
Diffstat (limited to 'hurd/hurdlookup.c')
-rw-r--r-- | hurd/hurdlookup.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/hurd/hurdlookup.c b/hurd/hurdlookup.c index 0714e4a..7e5f9af 100644 --- a/hurd/hurdlookup.c +++ b/hurd/hurdlookup.c @@ -429,6 +429,81 @@ __hurd_file_name_split (error_t (*use_init_port) } weak_alias (__hurd_file_name_split, hurd_file_name_split) +/* This is the same as hurd_file_name_split, except that it ignores + trailing slashes (so *NAME is never ""). */ +error_t +__hurd_directory_name_split (error_t (*use_init_port) + (int which, error_t (*operate) (file_t)), + file_t (*get_dtable_port) (int fd), + error_t (*lookup) + (file_t dir, char *name, int flags, mode_t mode, + retry_type *do_retry, string_t retry_name, + mach_port_t *result), + const char *file_name, + file_t *dir, char **name) +{ + error_t addref (file_t crdir) + { + *dir = crdir; + return __mach_port_mod_refs (__mach_task_self (), + crdir, MACH_PORT_RIGHT_SEND, +1); + } + + const char *lastslash = strrchr (file_name, '/'); + + if (lastslash != NULL && lastslash[1] == '\0') + { + /* Trailing slash doesn't count. Look back further. */ + + /* Back up over all trailing slashes. */ + while (lastslash > file_name && *lastslash == '/') + --lastslash; + + /* Find the last one earlier in the string, before the trailing ones. */ +#if __GLIBC__ > 2 || __GLIBC_MINOR__ >= 2 + lastslash = __memrchr (file_name, '/', lastslash - file_name); +#else + /* Keep backing up, looking for a slash. */ + do + if (lastslash == file_name) + { + /* Hit the start with no slash. */ + lastslash = NULL; + break; + } + while (*lastslash-- != '/'); +#endif + } + + if (lastslash != NULL) + { + if (lastslash == file_name) + { + /* "/foobar" => crdir + "foobar". */ + *name = (char *) file_name + 1; + return (*use_init_port) (INIT_PORT_CRDIR, &addref); + } + else + { + /* "/dir1/dir2/.../file". */ + char dirname[lastslash - file_name + 1]; + memcpy (dirname, file_name, lastslash - file_name); + dirname[lastslash - file_name] = '\0'; + *name = (char *) lastslash + 1; + return + __hurd_file_name_lookup (use_init_port, get_dtable_port, lookup, + dirname, 0, 0, dir); + } + } + else + { + /* "foobar" => cwdir + "foobar". */ + *name = (char *) file_name; + return (*use_init_port) (INIT_PORT_CWDIR, &addref); + } +} +weak_alias (__hurd_directory_name_split, hurd_directory_name_split) + file_t __file_name_lookup (const char *file_name, int flags, mode_t mode) @@ -458,6 +533,19 @@ __file_name_split (const char *file_name, char **name) } weak_alias (__file_name_split, file_name_split) +file_t +__directory_name_split (const char *directory_name, char **name) +{ + error_t err; + file_t result; + + err = __hurd_directory_name_split (&_hurd_ports_use, &__getdport, 0, + directory_name, &result, name); + + return err ? (__hurd_fail (err), MACH_PORT_NULL) : result; +} +weak_alias (__directory_name_split, directory_name_split) + file_t __file_name_lookup_under (file_t startdir, |