/*
- * reparse.c
- *
- * Handle reparse data.
+ * reparse.c - Handle reparse data.
*/
/*
* Copyright (C) 2012, 2013 Eric Biggers
*
- * This file is part of wimlib, a library for working with WIM files.
- *
- * wimlib is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 3 of the License, or (at your option)
- * any later version.
+ * This file 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 3 of the License, or (at your option) any
+ * later version.
*
- * wimlib 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 General Public License for more
+ * This file 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 General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
*/
-#include "dentry.h"
-#include "buffer_io.h"
-#include "lookup_table.h"
-#include "sha1.h"
-#include <errno.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
-static const utf16lechar volume_junction_prefix[11] = {
- cpu_to_le16('\\'),
- cpu_to_le16('\\'),
- cpu_to_le16('?'),
- cpu_to_le16('\\'),
- cpu_to_le16('V'),
- cpu_to_le16('o'),
- cpu_to_le16('l'),
- cpu_to_le16('u'),
- cpu_to_le16('m'),
- cpu_to_le16('e'),
- cpu_to_le16('{'),
-};
+#include <errno.h>
-/* Parse the "substitute name" (link target) from a symbolic link or junction
- * reparse point.
- *
- * Return value is:
- *
- * Non-negative integer:
- * The name is an absolute symbolic link in one of several formats,
- * and the return value is the number of UTF-16LE characters that need to
- * be advanced to reach a simple "absolute" path starting with a backslash
- * (i.e. skip over \??\ and/or drive letter)
- * Negative integer:
- * SUBST_NAME_IS_VOLUME_JUNCTION:
- * The name is a volume junction.
- * SUBST_NAME_IS_RELATIVE_LINK:
- * The name is a relative symbolic link.
- * SUBST_NAME_IS_UNKNOWN:
- * The name does not appear to be a valid symbolic link, junction,
- * or mount point.
- */
-int
-parse_substitute_name(const utf16lechar *substitute_name,
- u16 substitute_name_nbytes, u32 rptag)
-{
- u16 substitute_name_nchars = substitute_name_nbytes / 2;
-
- if (substitute_name_nchars >= 7 &&
- substitute_name[0] == cpu_to_le16('\\') &&
- substitute_name[1] == cpu_to_le16('?') &&
- substitute_name[2] == cpu_to_le16('?') &&
- substitute_name[3] == cpu_to_le16('\\') &&
- substitute_name[4] != cpu_to_le16('\0') &&
- substitute_name[5] == cpu_to_le16(':') &&
- substitute_name[6] == cpu_to_le16('\\'))
- {
- /* "Full" symlink or junction (\??\x:\ prefixed path) */
- return 6;
- } else if (rptag == WIM_IO_REPARSE_TAG_MOUNT_POINT &&
- substitute_name_nchars >= 12 &&
- memcmp(substitute_name, volume_junction_prefix,
- sizeof(volume_junction_prefix)) == 0 &&
- substitute_name[substitute_name_nchars - 1] == cpu_to_le16('\\'))
- {
- /* Volume junction. Can't really do anything with it. */
- return SUBST_NAME_IS_VOLUME_JUNCTION;
- } else if (rptag == WIM_IO_REPARSE_TAG_SYMLINK &&
- substitute_name_nchars >= 3 &&
- substitute_name[0] != cpu_to_le16('\0') &&
- substitute_name[1] == cpu_to_le16(':') &&
- substitute_name[2] == cpu_to_le16('\\'))
- {
- /* "Absolute" symlink, with drive letter */
- return 2;
- } else if (rptag == WIM_IO_REPARSE_TAG_SYMLINK &&
- substitute_name_nchars >= 1)
- {
- if (substitute_name[0] == cpu_to_le16('\\'))
- /* "Absolute" symlink, without drive letter */
- return 0;
- else
- /* "Relative" symlink, without drive letter */
- return SUBST_NAME_IS_RELATIVE_LINK;
- } else {
- return SUBST_NAME_IS_UNKNOWN;
- }
-}
+#include "wimlib/alloca.h"
+#include "wimlib/assert.h"
+#include "wimlib/compiler.h"
+#include "wimlib/endianness.h"
+#include "wimlib/encoding.h"
+#include "wimlib/error.h"
+#include "wimlib/inode.h"
+#include "wimlib/lookup_table.h"
+#include "wimlib/reparse.h"
+#include "wimlib/resource.h"
/*
* Read the data from a symbolic link, junction, or mount point reparse point
* description of the format of the reparse point buffers.
*/
int
-parse_reparse_data(const u8 *rpbuf, u16 rpbuflen, struct reparse_data *rpdata)
+parse_reparse_data(const u8 * restrict rpbuf, u16 rpbuflen,
+ struct reparse_data * restrict rpdata)
{
- const u8 *p = rpbuf;
u16 substitute_name_offset;
u16 print_name_offset;
+ const struct reparse_buffer_disk *rpbuf_disk =
+ (const struct reparse_buffer_disk*)rpbuf;
+ const u8 *data;
memset(rpdata, 0, sizeof(*rpdata));
if (rpbuflen < 16)
goto out_invalid;
- p = get_u32(p, &rpdata->rptag);
+ rpdata->rptag = le32_to_cpu(rpbuf_disk->rptag);
wimlib_assert(rpdata->rptag == WIM_IO_REPARSE_TAG_SYMLINK ||
rpdata->rptag == WIM_IO_REPARSE_TAG_MOUNT_POINT);
- p = get_u16(p, &rpdata->rpdatalen);
- p = get_u16(p, &rpdata->rpreserved);
- p = get_u16(p, &substitute_name_offset);
- p = get_u16(p, &rpdata->substitute_name_nbytes);
- p = get_u16(p, &print_name_offset);
- p = get_u16(p, &rpdata->print_name_nbytes);
+ rpdata->rpdatalen = le16_to_cpu(rpbuf_disk->rpdatalen);
+ rpdata->rpreserved = le16_to_cpu(rpbuf_disk->rpreserved);
+ substitute_name_offset = le16_to_cpu(rpbuf_disk->symlink.substitute_name_offset);
+ rpdata->substitute_name_nbytes = le16_to_cpu(rpbuf_disk->symlink.substitute_name_nbytes);
+ print_name_offset = le16_to_cpu(rpbuf_disk->symlink.print_name_offset);
+ rpdata->print_name_nbytes = le16_to_cpu(rpbuf_disk->symlink.print_name_nbytes);
+
+ if ((substitute_name_offset & 1) | (print_name_offset & 1) |
+ (rpdata->substitute_name_nbytes & 1) | (rpdata->print_name_nbytes & 1))
+ {
+ /* Names would be unaligned... */
+ goto out_invalid;
+ }
+
if (rpdata->rptag == WIM_IO_REPARSE_TAG_SYMLINK) {
if (rpbuflen < 20)
goto out_invalid;
- p = get_u32(p, &rpdata->rpflags);
+ rpdata->rpflags = le32_to_cpu(rpbuf_disk->symlink.rpflags);
+ data = rpbuf_disk->symlink.data;
+ } else {
+ data = rpbuf_disk->junction.data;
}
if ((size_t)substitute_name_offset + rpdata->substitute_name_nbytes +
- (p - rpbuf) > rpbuflen)
+ (data - rpbuf) > rpbuflen)
goto out_invalid;
if ((size_t)print_name_offset + rpdata->print_name_nbytes +
- (p - rpbuf) > rpbuflen)
+ (data - rpbuf) > rpbuflen)
goto out_invalid;
- rpdata->substitute_name = (utf16lechar*)&p[substitute_name_offset];
- rpdata->print_name = (utf16lechar*)&p[print_name_offset];
+ rpdata->substitute_name = (utf16lechar*)&data[substitute_name_offset];
+ rpdata->print_name = (utf16lechar*)&data[print_name_offset];
return 0;
out_invalid:
ERROR("Invalid reparse data");
* at least REPARSE_POINT_MAX_SIZE bytes long.
*/
int
-make_reparse_buffer(const struct reparse_data *rpdata, u8 *rpbuf)
+make_reparse_buffer(const struct reparse_data * restrict rpdata,
+ u8 * restrict rpbuf,
+ u16 * restrict rpbuflen_ret)
{
- u8 *p = rpbuf;
-
- p = put_u32(p, rpdata->rptag);
- p += 2; /* We set ReparseDataLength later */
- p = put_u16(p, rpdata->rpreserved);
- p = put_u16(p, 0); /* substitute name offset */
- p = put_u16(p, rpdata->substitute_name_nbytes); /* substitute name nbytes */
- p = put_u16(p, rpdata->substitute_name_nbytes + 2); /* print name offset */
- p = put_u16(p, rpdata->print_name_nbytes); /* print name nbytes */
+ struct reparse_buffer_disk *rpbuf_disk =
+ (struct reparse_buffer_disk*)rpbuf;
+ u8 *data;
+
if (rpdata->rptag == WIM_IO_REPARSE_TAG_SYMLINK)
- p = put_u32(p, rpdata->rpflags);
- /* We null-terminate the substitute and print names, although this may
- * not be strictly necessary. Note that the byte counts should not
- * include the null terminators. */
- if (p + rpdata->substitute_name_nbytes +
+ data = rpbuf_disk->symlink.data;
+ else
+ data = rpbuf_disk->junction.data;
+
+ if ((data - rpbuf) + rpdata->substitute_name_nbytes +
rpdata->print_name_nbytes +
- 2 * sizeof(utf16lechar) - rpbuf > REPARSE_POINT_MAX_SIZE)
+ 2 * sizeof(utf16lechar) > REPARSE_POINT_MAX_SIZE)
{
ERROR("Reparse data is too long!");
return WIMLIB_ERR_INVALID_REPARSE_DATA;
}
- p = put_bytes(p, rpdata->substitute_name_nbytes, rpdata->substitute_name);
- p = put_u16(p, 0);
- p = put_bytes(p, rpdata->print_name_nbytes, rpdata->print_name);
- p = put_u16(p, 0);
- put_u16(rpbuf + 4, p - rpbuf - 8); /* Set ReparseDataLength */
+
+ rpbuf_disk->rptag = cpu_to_le32(rpdata->rptag);
+ rpbuf_disk->rpreserved = cpu_to_le16(rpdata->rpreserved);
+ rpbuf_disk->symlink.substitute_name_offset = cpu_to_le16(0);
+ rpbuf_disk->symlink.substitute_name_nbytes = cpu_to_le16(rpdata->substitute_name_nbytes);
+ rpbuf_disk->symlink.print_name_offset = cpu_to_le16(rpdata->substitute_name_nbytes + 2);
+ rpbuf_disk->symlink.print_name_nbytes = cpu_to_le16(rpdata->print_name_nbytes);
+
+ if (rpdata->rptag == WIM_IO_REPARSE_TAG_SYMLINK)
+ rpbuf_disk->symlink.rpflags = cpu_to_le32(rpdata->rpflags);
+
+ /* We null-terminate the substitute and print names, although this may
+ * not be strictly necessary. Note that the byte counts should not
+ * include the null terminators. */
+ data = mempcpy(data, rpdata->substitute_name, rpdata->substitute_name_nbytes);
+ *(utf16lechar*)data = cpu_to_le16(0);
+ data += 2;
+ data = mempcpy(data, rpdata->print_name, rpdata->print_name_nbytes);
+ *(utf16lechar*)data = cpu_to_le16(0);
+ data += 2;
+ rpbuf_disk->rpdatalen = cpu_to_le16(data - rpbuf - 8);
+ *rpbuflen_ret = data - rpbuf;
return 0;
}
* buffer returned by this function.
*/
int
-wim_inode_get_reparse_data(const struct wim_inode *inode, u8 *rpbuf)
+wim_inode_get_reparse_data(const struct wim_inode * restrict inode,
+ u8 * restrict rpbuf,
+ u16 * restrict rpbuflen_ret,
+ struct wim_lookup_table_entry *lte_override)
{
struct wim_lookup_table_entry *lte;
int ret;
+ struct reparse_buffer_disk *rpbuf_disk;
+ u16 rpdatalen;
wimlib_assert(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT);
- lte = inode_unnamed_lte_resolved(inode);
- if (!lte) {
- ERROR("Reparse point has no reparse data!");
- return WIMLIB_ERR_INVALID_REPARSE_DATA;
+ if (!lte_override) {
+ lte = inode_unnamed_lte_resolved(inode);
+ if (!lte) {
+ ERROR("Reparse point has no reparse data!");
+ return WIMLIB_ERR_INVALID_REPARSE_DATA;
+ }
+ } else {
+ lte = lte_override;
}
- if (wim_resource_size(lte) > REPARSE_POINT_MAX_SIZE - 8) {
+
+ if (lte->size > REPARSE_POINT_MAX_SIZE - 8) {
ERROR("Reparse data is too long!");
return WIMLIB_ERR_INVALID_REPARSE_DATA;
}
+ rpdatalen = lte->size;
/* Read the data from the WIM file */
- ret = read_full_resource_into_buf(lte, rpbuf + 8, true);
+ ret = read_full_stream_into_buf(lte, rpbuf + 8);
if (ret)
return ret;
/* Reconstruct the first 8 bytes of the reparse point buffer */
+ rpbuf_disk = (struct reparse_buffer_disk*)rpbuf;
/* ReparseTag */
- put_u32(rpbuf, inode->i_reparse_tag);
+ rpbuf_disk->rptag = cpu_to_le32(inode->i_reparse_tag);
/* ReparseDataLength */
- put_u16(rpbuf + 4, wim_resource_size(lte));
+ rpbuf_disk->rpdatalen = cpu_to_le16(rpdatalen);
/* ReparseReserved
* XXX this could be one of the unknown fields in the WIM dentry. */
- put_u16(rpbuf + 6, 0);
+ rpbuf_disk->rpreserved = cpu_to_le16(0);
+
+ *rpbuflen_ret = rpdatalen + 8;
return 0;
}
/* UNIX version of getting and setting the data in reparse points */
-#if !defined(__WIN32__)
+#ifndef __WIN32__
-/* Get the UNIX symlink target from a WIM inode. The inode may be either a
- * "real" symlink (reparse tag WIM_IO_REPARSE_TAG_SYMLINK), or it may be a
- * junction point (reparse tag WIM_IO_REPARSE_TAG_MOUNT_POINT).
+static const utf16lechar volume_junction_prefix[11] = {
+ cpu_to_le16('\\'),
+ cpu_to_le16('?'),
+ cpu_to_le16('?'),
+ cpu_to_le16('\\'),
+ cpu_to_le16('V'),
+ cpu_to_le16('o'),
+ cpu_to_le16('l'),
+ cpu_to_le16('u'),
+ cpu_to_le16('m'),
+ cpu_to_le16('e'),
+ cpu_to_le16('{'),
+};
+
+enum {
+ SUBST_NAME_IS_RELATIVE_LINK = -1,
+ SUBST_NAME_IS_VOLUME_JUNCTION = -2,
+ SUBST_NAME_IS_UNKNOWN = -3,
+};
+
+/* Parse the "substitute name" (link target) from a symbolic link or junction
+ * reparse point.
+ *
+ * Return value is:
+ *
+ * Non-negative integer:
+ * The name is an absolute symbolic link in one of several formats,
+ * and the return value is the number of UTF-16LE characters that need to
+ * be advanced to reach a simple "absolute" path starting with a backslash
+ * (i.e. skip over \??\ and/or drive letter)
+ * Negative integer:
+ * SUBST_NAME_IS_VOLUME_JUNCTION:
+ * The name is a volume junction.
+ * SUBST_NAME_IS_RELATIVE_LINK:
+ * The name is a relative symbolic link.
+ * SUBST_NAME_IS_UNKNOWN:
+ * The name does not appear to be a valid symbolic link, junction,
+ * or mount point.
+ */
+static int
+parse_substitute_name(const utf16lechar *substitute_name,
+ u16 substitute_name_nbytes, u32 rptag)
+{
+ u16 substitute_name_nchars = substitute_name_nbytes / 2;
+
+ if (substitute_name_nchars >= 7 &&
+ substitute_name[0] == cpu_to_le16('\\') &&
+ substitute_name[1] == cpu_to_le16('?') &&
+ substitute_name[2] == cpu_to_le16('?') &&
+ substitute_name[3] == cpu_to_le16('\\') &&
+ substitute_name[4] != cpu_to_le16('\0') &&
+ substitute_name[5] == cpu_to_le16(':') &&
+ substitute_name[6] == cpu_to_le16('\\'))
+ {
+ /* "Full" symlink or junction (\??\x:\ prefixed path) */
+ return 6;
+ } else if (rptag == WIM_IO_REPARSE_TAG_MOUNT_POINT &&
+ substitute_name_nchars >= 12 &&
+ memcmp(substitute_name, volume_junction_prefix,
+ sizeof(volume_junction_prefix)) == 0 &&
+ substitute_name[substitute_name_nchars - 1] == cpu_to_le16('\\'))
+ {
+ /* Volume junction. Can't really do anything with it. */
+ return SUBST_NAME_IS_VOLUME_JUNCTION;
+ } else if (rptag == WIM_IO_REPARSE_TAG_SYMLINK &&
+ substitute_name_nchars >= 3 &&
+ substitute_name[0] != cpu_to_le16('\0') &&
+ substitute_name[1] == cpu_to_le16(':') &&
+ substitute_name[2] == cpu_to_le16('\\'))
+ {
+ /* "Absolute" symlink, with drive letter */
+ return 2;
+ } else if (rptag == WIM_IO_REPARSE_TAG_SYMLINK &&
+ substitute_name_nchars >= 1)
+ {
+ if (substitute_name[0] == cpu_to_le16('\\'))
+ /* "Absolute" symlink, without drive letter */
+ return 0;
+ else
+ /* "Relative" symlink, without drive letter */
+ return SUBST_NAME_IS_RELATIVE_LINK;
+ } else {
+ return SUBST_NAME_IS_UNKNOWN;
+ }
+}
+
+/*
+ * Get the UNIX-style symlink target from the WIM inode for a reparse point.
+ * Specifically, this translates the target from UTF-16 to the current multibyte
+ * encoding, strips the drive prefix if present, and replaces backslashes with
+ * forward slashes.
+ *
+ * @inode
+ * The inode to read the symlink from. It must be a reparse point with
+ * tag WIM_IO_REPARSE_TAG_SYMLINK (a real symlink) or
+ * WIM_IO_REPARSE_TAG_MOUNT_POINT (a mount point or junction point).
+ *
+ * @buf
+ * Buffer into which to place the link target.
+ *
+ * @bufsize
+ * Available space in @buf, in bytes.
*
- * This has similar semantics to the UNIX readlink() function, except the path
- * argument is swapped out with the `struct wim_inode' for a reparse point, and
- * on failure a negated error code is returned rather than -1 with errno set. */
+ * @lte_override
+ * If not NULL, the stream from which to read the reparse data. Otherwise,
+ * the reparse data will be read from the unnamed stream of @inode.
+ *
+ * If the entire symbolic link target was placed in the buffer, returns the
+ * number of bytes written. The resulting string is not null-terminated. If
+ * the symbolic link target was too large to be placed in the buffer, the first
+ * @bufsize bytes of it are placed in the buffer and
+ * -ENAMETOOLONG is returned. Otherwise, a negative errno value indicating
+ * another error is returned.
+ */
ssize_t
-wim_inode_readlink(const struct wim_inode *inode, char *buf, size_t bufsize)
+wim_inode_readlink(const struct wim_inode * restrict inode,
+ char * restrict buf, size_t bufsize,
+ struct wim_lookup_table_entry *lte_override)
{
int ret;
- u8 rpbuf[REPARSE_POINT_MAX_SIZE];
- u16 rpdatalen;
+ struct reparse_buffer_disk rpbuf_disk _aligned_attribute(8);
struct reparse_data rpdata;
char *link_target;
char *translated_target;
size_t link_target_len;
+ u16 rpbuflen;
wimlib_assert(inode_is_symlink(inode));
- if (wim_inode_get_reparse_data(inode, rpbuf))
+ if (wim_inode_get_reparse_data(inode, (u8*)&rpbuf_disk, &rpbuflen,
+ lte_override))
return -EIO;
- get_u16(rpbuf + 4, &rpdatalen);
-
- if (parse_reparse_data(rpbuf, rpdatalen + 8, &rpdata))
- return -EIO;
+ if (parse_reparse_data((const u8*)&rpbuf_disk, rpbuflen, &rpdata))
+ return -EINVAL;
ret = utf16le_to_tstr(rpdata.substitute_name,
rpdata.substitute_name_nbytes,
case SUBST_NAME_IS_UNKNOWN:
ERROR("Can't understand reparse point "
"substitute name \"%s\"", link_target);
- return -EIO;
+ ret = -EIO;
+ goto out_free_link_target;
default:
translated_target += ret;
link_target_len -= ret;
ret = link_target_len;
}
memcpy(buf, translated_target, link_target_len);
+out_free_link_target:
FREE(link_target);
return ret;
}
-#ifdef HAVE_ALLOCA_H
-# include <alloca.h>
-#endif
-
int
wim_inode_set_symlink(struct wim_inode *inode,
const char *target,
struct wim_lookup_table *lookup_table)
{
- u8 rpbuf[REPARSE_POINT_MAX_SIZE];
- u16 rpdatalen;
+ struct reparse_buffer_disk rpbuf_disk _aligned_attribute(8);
struct reparse_data rpdata;
static const char abs_subst_name_prefix[12] = "\\\0?\0?\0\\\0C\0:\0";
static const char abs_print_name_prefix[4] = "C\0:\0";
utf16lechar *name_utf16le;
size_t name_utf16le_nbytes;
int ret;
+ u16 rpbuflen;
DEBUG("Creating reparse point data buffer for UNIX "
"symlink target \"%s\"", target);
* ways to provide Windows paths.)
*
* To change a UNIX relative symbolic link to Windows format, we only
- * need to translate it to UTF-16LE and replace backslashes with forward
- * slashes. We do not make any attempt to handle filename character
+ * need to translate it to UTF-16LE and replace forward slashes with
+ * backslashes. We do not make any attempt to handle filename character
* problems, such as a link target that itself contains backslashes on
* UNIX. Then, for these relative links, we set the reparse header
* @flags field to SYMBOLIC_LINK_RELATIVE.
rpdata.rpflags = SYMBOLIC_LINK_RELATIVE;
}
- ret = make_reparse_buffer(&rpdata, rpbuf);
+ ret = make_reparse_buffer(&rpdata, (u8*)&rpbuf_disk, &rpbuflen);
if (ret == 0) {
- get_u16(rpbuf + 4, &rpdatalen);
- ret = inode_set_unnamed_stream(inode, rpbuf + 8, rpdatalen,
+ ret = inode_set_unnamed_stream(inode,
+ (u8*)&rpbuf_disk + 8,
+ rpbuflen - 8,
lookup_table);
}
FREE(name_utf16le);
return ret;
}
-#include <sys/stat.h>
-
-static int
-unix_get_ino_and_dev(const char *path, u64 *ino_ret, u64 *dev_ret)
-{
- struct stat stbuf;
- if (stat(path, &stbuf)) {
- WARNING_WITH_ERRNO("Failed to stat \"%s\"", path);
- /* Treat as a link pointing outside the capture root (it
- * most likely is). */
- return WIMLIB_ERR_STAT;
- } else {
- *ino_ret = stbuf.st_ino;
- *dev_ret = stbuf.st_dev;
- return 0;
- }
-}
-
-#endif /* !defined(__WIN32__) */
-
-#ifdef __WIN32__
-# include "win32.h"
-# define RP_PATH_SEPARATOR L'\\'
-# define is_rp_path_separator(c) ((c) == L'\\' || (c) == L'/')
-# define os_get_ino_and_dev win32_get_file_and_vol_ids
-#else
-# define RP_PATH_SEPARATOR '/'
-# define is_rp_path_separator(c) ((c) == '/')
-# define os_get_ino_and_dev unix_get_ino_and_dev
-#endif
-
-/* Fix up absolute symbolic link targets--- mostly shared between UNIX and
- * Windows */
-tchar *
-fixup_symlink(tchar *dest, u64 capture_root_ino, u64 capture_root_dev)
-{
- tchar *p = dest;
-
- DEBUG("Fixing symlink or junction \"%"TS"\"", dest);
- for (;;) {
- tchar save;
- int ret;
- u64 ino;
- u64 dev;
-
- while (is_rp_path_separator(*p))
- p++;
-
- save = *p;
- *p = T('\0');
- ret = os_get_ino_and_dev(dest, &ino, &dev);
- *p = save;
-
- if (ret) /* stat() failed before we got to the capture root---
- assume the link points outside it. */
- return NULL;
-
- if (ino == capture_root_ino && dev == capture_root_dev) {
- /* Link points inside capture root. Return abbreviated
- * path. */
- if (*p == T('\0'))
- *(p - 1) = RP_PATH_SEPARATOR;
- while (p - 1 >= dest && is_rp_path_separator(*(p - 1)))
- p--;
- return p;
- }
-
- if (*p == T('\0')) {
- /* Link points outside capture root. */
- return NULL;
- }
-
- do {
- p++;
- } while (!is_rp_path_separator(*p) && *p != T('\0'));
- }
-}
+#endif /* !__WIN32__ */
git://wimlib.net / wimlib / blobdiff