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Diffstat (limited to 'sysdeps/mach/hurd/getcwd.c')
-rw-r--r--sysdeps/mach/hurd/getcwd.c320
1 files changed, 0 insertions, 320 deletions
diff --git a/sysdeps/mach/hurd/getcwd.c b/sysdeps/mach/hurd/getcwd.c
deleted file mode 100644
index 9b371b041a..0000000000
--- a/sysdeps/mach/hurd/getcwd.c
+++ /dev/null
@@ -1,320 +0,0 @@
-/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <hurd.h>
-#include <hurd/port.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-
-
-/* Get the canonical absolute name of the given directory port, and put it
- in SIZE bytes of BUF. Returns NULL if the directory couldn't be
- determined or SIZE was too small. If successful, returns BUF. In GNU,
- if BUF is NULL, an array is allocated with `malloc'; the array is SIZE
- bytes long, unless SIZE <= 0, in which case it is as big as necessary.
- If our root directory cannot be reached, the result will not begin with
- a slash to indicate that it is relative to some unknown root directory. */
-
-char *
-_hurd_canonicalize_directory_name_internal (file_t thisdir,
- char *buf,
- size_t size)
-{
- error_t err;
- mach_port_t rootid, thisid, rootdevid, thisdevid;
- ino64_t rootino, thisino;
- char *file_name;
- char *file_namep;
- file_t parent;
- char *dirbuf = NULL;
- unsigned int dirbufsize = 0;
- const size_t orig_size = size;
-
- inline void cleanup (void)
- {
- if (parent != thisdir)
- __mach_port_deallocate (__mach_task_self (), parent);
-
- __mach_port_deallocate (__mach_task_self (), thisid);
- __mach_port_deallocate (__mach_task_self (), thisdevid);
- __mach_port_deallocate (__mach_task_self (), rootid);
-
- if (dirbuf != NULL)
- __vm_deallocate (__mach_task_self (),
- (vm_address_t) dirbuf, dirbufsize);
- }
-
-
- if (size <= 0)
- {
- if (buf != NULL)
- {
- errno = EINVAL;
- return NULL;
- }
-
- size = FILENAME_MAX * 4 + 1; /* Good starting guess. */
- }
-
- if (buf != NULL)
- file_name = buf;
- else
- {
- file_name = malloc (size);
- if (file_name == NULL)
- return NULL;
- }
-
- file_namep = file_name + size;
- *--file_namep = '\0';
-
- /* Get a port to our root directory and get its identity. */
-
- if (err = __USEPORT (CRDIR, __io_identity (port,
- &rootid, &rootdevid, &rootino)))
- return __hurd_fail (err), NULL;
- __mach_port_deallocate (__mach_task_self (), rootdevid);
-
- /* Stat the port to the directory of interest. */
-
- if (err = __io_identity (thisdir, &thisid, &thisdevid, &thisino))
- {
- __mach_port_deallocate (__mach_task_self (), rootid);
- return __hurd_fail (err), NULL;
- }
-
- parent = thisdir;
- while (thisid != rootid)
- {
- /* PARENT is a port to the directory we are currently on;
- THISID, THISDEV, and THISINO are its identity.
- Look in its parent (..) for a file with the same file number. */
-
- struct dirent64 *d;
- mach_port_t dotid, dotdevid;
- ino64_t dotino;
- int mount_point;
- file_t newp;
- char *dirdata;
- size_t dirdatasize;
- int direntry, nentries;
-
-
- /* Look at the parent directory. */
- newp = __file_name_lookup_under (parent, "..", O_READ, 0);
- if (newp == MACH_PORT_NULL)
- goto lose;
- if (parent != thisdir)
- __mach_port_deallocate (__mach_task_self (), parent);
- parent = newp;
-
- /* Get this directory's identity and figure out if it's a mount
- point. */
- if (err = __io_identity (parent, &dotid, &dotdevid, &dotino))
- goto errlose;
- mount_point = dotdevid != thisdevid;
-
- if (thisid == dotid)
- {
- /* `..' == `.' but it is not our root directory. */
- __mach_port_deallocate (__mach_task_self (), dotid);
- __mach_port_deallocate (__mach_task_self (), dotdevid);
- break;
- }
-
- /* Search for the last directory. */
- direntry = 0;
- dirdata = dirbuf;
- dirdatasize = dirbufsize;
- while (!(err = __dir_readdir (parent, &dirdata, &dirdatasize,
- direntry, -1, 0, &nentries)) &&
- nentries != 0)
- {
- /* We have a block of directory entries. */
-
- unsigned int offset;
-
- direntry += nentries;
-
- if (dirdata != dirbuf)
- {
- /* The data was passed out of line, so our old buffer is no
- longer useful. Deallocate the old buffer and reset our
- information for the new buffer. */
- __vm_deallocate (__mach_task_self (),
- (vm_address_t) dirbuf, dirbufsize);
- dirbuf = dirdata;
- dirbufsize = round_page (dirdatasize);
- }
-
- /* Iterate over the returned directory entries, looking for one
- whose file number is THISINO. */
-
- offset = 0;
- while (offset < dirdatasize)
- {
- d = (struct dirent64 *) &dirdata[offset];
- offset += d->d_reclen;
-
- /* Ignore `.' and `..'. */
- if (d->d_name[0] == '.' &&
- (d->d_namlen == 1 ||
- (d->d_namlen == 2 && d->d_name[1] == '.')))
- continue;
-
- if (mount_point || d->d_ino == thisino)
- {
- file_t try = __file_name_lookup_under (parent, d->d_name,
- O_NOLINK, 0);
- file_t id, devid;
- ino64_t fileno;
- if (try == MACH_PORT_NULL)
- goto lose;
- err = __io_identity (try, &id, &devid, &fileno);
- __mach_port_deallocate (__mach_task_self (), try);
- if (err)
- goto inner_errlose;
- __mach_port_deallocate (__mach_task_self (), id);
- __mach_port_deallocate (__mach_task_self (), devid);
- if (id == thisid)
- goto found;
- }
- }
- }
-
- if (err)
- {
- inner_errlose: /* Goto ERRLOSE: after cleaning up. */
- __mach_port_deallocate (__mach_task_self (), dotid);
- __mach_port_deallocate (__mach_task_self (), dotdevid);
- goto errlose;
- }
- else if (nentries == 0)
- {
- /* We got to the end of the directory without finding anything!
- We are in a directory that has been unlinked, or something is
- broken. */
- err = ENOENT;
- goto inner_errlose;
- }
- else
- found:
- {
- /* Prepend the directory name just discovered. */
-
- if (file_namep - file_name < d->d_namlen + 1)
- {
- if (orig_size > 0)
- {
- errno = ERANGE;
- return NULL;
- }
- else
- {
- size *= 2;
- buf = realloc (file_name, size);
- if (buf == NULL)
- {
- free (file_name);
- return NULL;
- }
- file_namep = &buf[file_namep - file_name + size / 2];
- file_name = buf;
- /* Move current contents up to the end of the buffer.
- This is guaranteed to be non-overlapping. */
- memcpy (file_namep, file_namep - size / 2,
- file_name + size - file_namep);
- }
- }
- file_namep -= d->d_namlen;
- (void) memcpy (file_namep, d->d_name, d->d_namlen);
- *--file_namep = '/';
- }
-
- /* The next iteration will find the name of the directory we
- just searched through. */
- __mach_port_deallocate (__mach_task_self (), thisid);
- __mach_port_deallocate (__mach_task_self (), thisdevid);
- thisid = dotid;
- thisdevid = dotdevid;
- thisino = dotino;
- }
-
- if (file_namep == &file_name[size - 1])
- /* We found nothing and got all the way to the root.
- So the root is our current directory. */
- *--file_namep = '/';
-
- if (thisid != rootid)
- /* We did not get to our root directory. The returned name should
- not begin with a slash. */
- ++file_namep;
-
- memmove (file_name, file_namep, file_name + size - file_namep);
- cleanup ();
- return file_name;
-
- errlose:
- /* Set errno. */
- (void) __hurd_fail (err);
- lose:
- cleanup ();
- return NULL;
-}
-
-char *
-__canonicalize_directory_name_internal (const char *thisdir, char *buf,
- size_t size)
-{
- char *result;
- file_t port = __file_name_lookup (thisdir, 0, 0);
- if (port == MACH_PORT_NULL)
- return NULL;
- result = _hurd_canonicalize_directory_name_internal (port, buf, size);
- __mach_port_deallocate (__mach_task_self (), port);
- return result;
-}
-
-/* Get the pathname of the current working directory, and put it in SIZE
- bytes of BUF. Returns NULL if the directory couldn't be determined or
- SIZE was too small. If successful, returns BUF. In GNU, if BUF is
- NULL, an array is allocated with `malloc'; the array is SIZE bytes long,
- unless SIZE <= 0, in which case it is as big as necessary. */
-char *
-__getcwd (char *buf, size_t size)
-{
- char *cwd =
- __USEPORT (CWDIR,
- _hurd_canonicalize_directory_name_internal (port,
- buf, size));
- if (cwd && cwd[0] != '/')
- {
- /* `cwd' is an unknown root directory. */
- if (buf == NULL)
- free (cwd);
- return __hurd_fail (EGRATUITOUS), NULL;
- }
- return cwd;
-}
-weak_alias (__getcwd, getcwd)
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