+2013-06-14 Vladimir Serbinenko <phcoder@gmail.com>
+
+ Move flavour-specific parts out of common cpio.c file and
+ rename remaining to cpio_common.c
+
2013-06-07 Andrey Borzenkov <arvidjaar@gmail.com>
* grub-core/script/execute.c (grub_script_execute_sourcecode): Split
common = tests/example_grub_script_test.in;
};
+script = {
+ testcase;
+ name = grub_script_eval;
+ common = tests/grub_script_eval.in;
+};
+
script = {
testcase;
name = grub_script_test;
/* cpio.c - cpio and tar filesystem. */
/*
* GRUB -- GRand Unified Bootloader
- * Copyright (C) 2007,2008,2009 Free Software Foundation, Inc.
+ * Copyright (C) 2007,2008,2009,2013 Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <grub/file.h>
-#include <grub/mm.h>
#include <grub/misc.h>
-#include <grub/disk.h>
-#include <grub/dl.h>
-#include <grub/i18n.h>
-GRUB_MOD_LICENSE ("GPLv3+");
-
-#define ATTR_TYPE 0160000
-#define ATTR_FILE 0100000
-#define ATTR_DIR 0040000
-#define ATTR_LNK 0120000
-
-#ifdef MODE_ODC
-#define ALIGN_CPIO(x) x
-#define MAGIC "070707"
-struct head
-{
- char magic[6];
- char dev[6];
- char ino[6];
- char mode[6];
- char uid[6];
- char gid[6];
- char nlink[6];
- char rdev[6];
- char mtime[11];
- char namesize[6];
- char filesize[11];
-} __attribute__ ((packed));
-#elif defined (MODE_NEWC)
-#define ALIGN_CPIO(x) (ALIGN_UP ((x), 4))
-#define MAGIC "070701"
-#define MAGIC2 "070702"
-struct head
-{
- char magic[6];
- char ino[8];
- char mode[8];
- char uid[8];
- char gid[8];
- char nlink[8];
- char mtime[8];
- char filesize[8];
- char devmajor[8];
- char devminor[8];
- char rdevmajor[8];
- char rdevminor[8];
- char namesize[8];
- char check[8];
-} __attribute__ ((packed));
-#elif !defined (MODE_USTAR)
/* cpio support */
#define ALIGN_CPIO(x) (ALIGN_UP ((x), 2))
-#ifdef MODE_BIGENDIAN
-#define MAGIC "\x71\xc7"
-#else
#define MAGIC "\xc7\x71"
-#endif
struct head
{
grub_uint16_t magic[1];
grub_uint16_t namesize[1];
grub_uint16_t filesize[2];
} __attribute__ ((packed));
-#else
-/* tar support */
-#define MAGIC "ustar"
-struct head
-{
- char name[100];
- char mode[8];
- char uid[8];
- char gid[8];
- char size[12];
- char mtime[12];
- char chksum[8];
- char typeflag;
- char linkname[100];
- char magic[6];
- char version[2];
- char uname[32];
- char gname[32];
- char devmajor[8];
- char devminor[8];
- char prefix[155];
-} __attribute__ ((packed));
-#endif
-
-struct grub_cpio_data
-{
- grub_disk_t disk;
- grub_off_t hofs;
- grub_off_t dofs;
- grub_off_t size;
-#ifdef MODE_USTAR
- char *linkname;
- grub_size_t linkname_alloc;
-#endif
-};
-
-static grub_dl_t my_mod;
-static inline void
-canonicalize (char *name)
-{
- char *iptr, *optr;
- for (iptr = name, optr = name; *iptr; )
- {
- while (*iptr == '/')
- iptr++;
- if (iptr[0] == '.' && (iptr[1] == '/' || iptr[1] == 0))
- {
- iptr += 2;
- continue;
- }
- if (iptr[0] == '.' && iptr[1] == '.' && (iptr[2] == '/' || iptr[2] == 0))
- {
- iptr += 3;
- if (optr == name)
- continue;
- for (optr -= 2; optr >= name && *optr != '/'; optr--);
- optr++;
- continue;
- }
- while (*iptr && *iptr != '/')
- *optr++ = *iptr++;
- if (*iptr)
- *optr++ = *iptr++;
- }
- *optr = 0;
-}
-
-#if defined (MODE_ODC) || defined (MODE_USTAR)
-static inline unsigned long long
-read_number (const char *str, grub_size_t size)
-{
- unsigned long long ret = 0;
- while (size-- && *str >= '0' && *str <= '7')
- ret = (ret << 3) | (*str++ & 0xf);
- return ret;
-}
-#elif defined (MODE_NEWC)
-static inline unsigned long long
-read_number (const char *str, grub_size_t size)
-{
- unsigned long long ret = 0;
- while (size-- && grub_isxdigit (*str))
- {
- char dig = *str++;
- if (dig >= '0' && dig <= '9')
- dig &= 0xf;
- else if (dig >= 'a' && dig <= 'f')
- dig -= 'a' - 10;
- else
- dig -= 'A' - 10;
- ret = (ret << 4) | (dig);
- }
- return ret;
-}
-#else
static inline unsigned long long
read_number (const grub_uint16_t *arr, grub_size_t size)
{
long long ret = 0;
-#ifdef MODE_BIGENDIAN
- while (size--)
- ret = (ret << 16) | grub_be_to_cpu16 (*arr++);
-#else
while (size--)
ret = (ret << 16) | grub_le_to_cpu16 (*arr++);
-#endif
return ret;
}
-#endif
-
-static grub_err_t
-grub_cpio_find_file (struct grub_cpio_data *data, char **name,
- grub_int32_t *mtime, grub_disk_addr_t *ofs,
- grub_uint32_t *mode)
-{
-#ifndef MODE_USTAR
- struct head hd;
- grub_size_t namesize;
- grub_uint32_t modeval;
-
- if (grub_disk_read (data->disk, 0, data->hofs, sizeof (hd), &hd))
- return grub_errno;
-
- if (grub_memcmp (hd.magic, MAGIC, sizeof (hd.magic)) != 0
-#ifdef MAGIC2
- && grub_memcmp (hd.magic, MAGIC2, sizeof (hd.magic)) != 0
-#endif
- )
- return grub_error (GRUB_ERR_BAD_FS, "invalid cpio archive");
- data->size = read_number (hd.filesize, ARRAY_SIZE (hd.filesize));
- if (mtime)
- *mtime = read_number (hd.mtime, ARRAY_SIZE (hd.mtime));
- modeval = read_number (hd.mode, ARRAY_SIZE (hd.mode));
- namesize = read_number (hd.namesize, ARRAY_SIZE (hd.namesize));
-
- if (mode)
- *mode = modeval;
-
- *name = grub_malloc (namesize + 1);
- if (*name == NULL)
- return grub_errno;
-
- if (grub_disk_read (data->disk, 0, data->hofs + sizeof (hd),
- namesize, *name))
- {
- grub_free (*name);
- return grub_errno;
- }
- (*name)[namesize] = 0;
-
- if (data->size == 0 && modeval == 0 && namesize == 11
- && grub_memcmp(*name, "TRAILER!!!", 11) == 0)
- {
- *ofs = 0;
- grub_free (*name);
- return GRUB_ERR_NONE;
- }
-
- canonicalize (*name);
-
- data->dofs = data->hofs + ALIGN_CPIO (sizeof (hd) + namesize);
- *ofs = data->dofs + ALIGN_CPIO (data->size);
-#else
- struct head hd;
- int reread = 0, have_longname = 0, have_longlink = 0;
-
- for (reread = 0; reread < 3; reread++)
- {
- if (grub_disk_read (data->disk, 0, data->hofs, sizeof (hd), &hd))
- return grub_errno;
-
- if (!hd.name[0] && !hd.prefix[0])
- {
- *ofs = 0;
- return GRUB_ERR_NONE;
- }
-
- if (grub_memcmp (hd.magic, MAGIC, sizeof (MAGIC) - 1))
- return grub_error (GRUB_ERR_BAD_FS, "invalid tar archive");
-
- if (hd.typeflag == 'L')
- {
- grub_err_t err;
- grub_size_t namesize = read_number (hd.size, sizeof (hd.size));
- *name = grub_malloc (namesize + 1);
- if (*name == NULL)
- return grub_errno;
- err = grub_disk_read (data->disk, 0,
- data->hofs + GRUB_DISK_SECTOR_SIZE, namesize,
- *name);
- (*name)[namesize] = 0;
- if (err)
- return err;
- data->hofs += GRUB_DISK_SECTOR_SIZE
- + ((namesize + GRUB_DISK_SECTOR_SIZE - 1) &
- ~(GRUB_DISK_SECTOR_SIZE - 1));
- have_longname = 1;
- continue;
- }
-
- if (hd.typeflag == 'K')
- {
- grub_err_t err;
- grub_size_t linksize = read_number (hd.size, sizeof (hd.size));
- if (data->linkname_alloc < linksize + 1)
- {
- char *n;
- n = grub_malloc (2 * (linksize + 1));
- if (!n)
- return grub_errno;
- grub_free (data->linkname);
- data->linkname = n;
- data->linkname_alloc = 2 * (linksize + 1);
- }
-
- err = grub_disk_read (data->disk, 0,
- data->hofs + GRUB_DISK_SECTOR_SIZE, linksize,
- data->linkname);
- if (err)
- return err;
- data->linkname[linksize] = 0;
- data->hofs += GRUB_DISK_SECTOR_SIZE
- + ((linksize + GRUB_DISK_SECTOR_SIZE - 1) &
- ~(GRUB_DISK_SECTOR_SIZE - 1));
- have_longlink = 1;
- continue;
- }
-
- if (!have_longname)
- {
- grub_size_t extra_size = 0;
-
- while (extra_size < sizeof (hd.prefix)
- && hd.prefix[extra_size])
- extra_size++;
- *name = grub_malloc (sizeof (hd.name) + extra_size + 2);
- if (*name == NULL)
- return grub_errno;
- if (hd.prefix[0])
- {
- grub_memcpy (*name, hd.prefix, extra_size);
- (*name)[extra_size++] = '/';
- }
- grub_memcpy (*name + extra_size, hd.name, sizeof (hd.name));
- (*name)[extra_size + sizeof (hd.name)] = 0;
- }
-
- data->size = read_number (hd.size, sizeof (hd.size));
- data->dofs = data->hofs + GRUB_DISK_SECTOR_SIZE;
- *ofs = data->dofs + ((data->size + GRUB_DISK_SECTOR_SIZE - 1) &
- ~(GRUB_DISK_SECTOR_SIZE - 1));
- if (mtime)
- *mtime = read_number (hd.mtime, sizeof (hd.mtime));
- if (mode)
- {
- *mode = read_number (hd.mode, sizeof (hd.mode));
- switch (hd.typeflag)
- {
- /* Hardlink. */
- case '1':
- /* Symlink. */
- case '2':
- *mode |= ATTR_LNK;
- break;
- case '0':
- *mode |= ATTR_FILE;
- break;
- case '5':
- *mode |= ATTR_DIR;
- break;
- }
- }
- if (!have_longlink)
- {
- if (data->linkname_alloc < 101)
- {
- char *n;
- n = grub_malloc (101);
- if (!n)
- return grub_errno;
- grub_free (data->linkname);
- data->linkname = n;
- data->linkname_alloc = 101;
- }
- grub_memcpy (data->linkname, hd.linkname, sizeof (hd.linkname));
- data->linkname[100] = 0;
- }
-
- canonicalize (*name);
- return GRUB_ERR_NONE;
- }
-#endif
- return GRUB_ERR_NONE;
-}
-
-static struct grub_cpio_data *
-grub_cpio_mount (grub_disk_t disk)
-{
- struct head hd;
- struct grub_cpio_data *data;
-
- if (grub_disk_read (disk, 0, 0, sizeof (hd), &hd))
- goto fail;
-
- if (grub_memcmp (hd.magic, MAGIC, sizeof (MAGIC) - 1)
-#ifdef MAGIC2
- && grub_memcmp (hd.magic, MAGIC2, sizeof (MAGIC2) - 1)
-#endif
- )
- goto fail;
-
- data = (struct grub_cpio_data *) grub_zalloc (sizeof (*data));
- if (!data)
- goto fail;
-
- data->disk = disk;
-
- return data;
-
-fail:
- grub_error (GRUB_ERR_BAD_FS, "not a "
-#ifdef MODE_USTAR
- "tar"
-#else
- "cpio"
-#endif
- " filesystem");
- return 0;
-}
-static grub_err_t
-handle_symlink (struct grub_cpio_data *data,
- const char *fn, char **name,
- grub_uint32_t mode, int *restart)
-{
- grub_size_t flen;
- char *target;
-#ifndef MODE_USTAR
- grub_err_t err;
-#endif
- char *ptr;
- char *lastslash;
- grub_size_t prefixlen;
- char *rest;
- grub_size_t size;
-
- *restart = 0;
-
- if ((mode & ATTR_TYPE) != ATTR_LNK)
- return GRUB_ERR_NONE;
- flen = grub_strlen (fn);
- if (grub_memcmp (*name, fn, flen) != 0
- || ((*name)[flen] != 0 && (*name)[flen] != '/'))
- return GRUB_ERR_NONE;
- rest = *name + flen;
- lastslash = rest;
- if (*rest)
- rest++;
- while (lastslash >= *name && *lastslash != '/')
- lastslash--;
- if (lastslash >= *name)
- prefixlen = lastslash - *name;
- else
- prefixlen = 0;
-
- if (prefixlen)
- prefixlen++;
-
-#ifdef MODE_USTAR
- size = grub_strlen (data->linkname);
-#else
- size = data->size;
-#endif
- if (size == 0)
- return GRUB_ERR_NONE;
- target = grub_malloc (size + grub_strlen (*name) + 2);
- if (!target)
- return grub_errno;
-
-#ifdef MODE_USTAR
- grub_memcpy (target + prefixlen, data->linkname, size);
-#else
- err = grub_disk_read (data->disk, 0, data->dofs, data->size,
- target + prefixlen);
- if (err)
- return err;
-#endif
- if (target[prefixlen] == '/')
- {
- grub_memmove (target, target + prefixlen, size);
- ptr = target + size;
- ptr = grub_stpcpy (ptr, rest);
- *ptr = 0;
- grub_dprintf ("cpio", "symlink redirected %s to %s\n",
- *name, target);
- grub_free (*name);
-
- canonicalize (target);
- *name = target;
- *restart = 1;
- return GRUB_ERR_NONE;
- }
- if (prefixlen)
- {
- grub_memcpy (target, *name, prefixlen);
- target[prefixlen-1] = '/';
- }
- ptr = target + prefixlen + size;
- ptr = grub_stpcpy (ptr, rest);
- *ptr = 0;
- grub_dprintf ("cpio", "symlink redirected %s to %s\n",
- *name, target);
- grub_free (*name);
- canonicalize (target);
- *name = target;
- *restart = 1;
- return GRUB_ERR_NONE;
-}
-
-static grub_err_t
-grub_cpio_dir (grub_device_t device, const char *path_in,
- grub_fs_dir_hook_t hook, void *hook_data)
-{
- struct grub_cpio_data *data;
- grub_disk_addr_t ofs;
- char *prev, *name, *path, *ptr;
- grub_size_t len;
- int symlinknest = 0;
-
- path = grub_strdup (path_in + 1);
- if (!path)
- return grub_errno;
- canonicalize (path);
- for (ptr = path + grub_strlen (path) - 1; ptr >= path && *ptr == '/'; ptr--)
- *ptr = 0;
-
- grub_dl_ref (my_mod);
-
- prev = 0;
-
- data = grub_cpio_mount (device->disk);
- if (!data)
- {
- grub_free (path);
- return grub_errno;
- }
-
- len = grub_strlen (path);
- data->hofs = 0;
- while (1)
- {
- grub_int32_t mtime;
- grub_uint32_t mode;
- grub_err_t err;
-
- if (grub_cpio_find_file (data, &name, &mtime, &ofs, &mode))
- goto fail;
-
- if (!ofs)
- break;
-
- if (grub_memcmp (path, name, len) == 0
- && (name[len] == 0 || name[len] == '/' || len == 0))
- {
- char *p, *n;
-
- n = name + len;
- while (*n == '/')
- n++;
-
- p = grub_strchr (n, '/');
- if (p)
- *p = 0;
-
- if (((!prev) || (grub_strcmp (prev, name) != 0)) && *n != 0)
- {
- struct grub_dirhook_info info;
- grub_memset (&info, 0, sizeof (info));
- info.dir = (p != NULL) || ((mode & ATTR_TYPE) == ATTR_DIR);
- info.mtime = mtime;
- info.mtimeset = 1;
-
- if (hook (n, &info, hook_data))
- {
- grub_free (name);
- goto fail;
- }
- grub_free (prev);
- prev = name;
- }
- else
- {
- int restart = 0;
- err = handle_symlink (data, name, &path, mode, &restart);
- grub_free (name);
- if (err)
- goto fail;
- if (restart)
- {
- len = grub_strlen (path);
- if (++symlinknest == 8)
- {
- grub_error (GRUB_ERR_SYMLINK_LOOP,
- N_("too deep nesting of symlinks"));
- goto fail;
- }
- ofs = 0;
- }
- }
- }
- else
- grub_free (name);
- data->hofs = ofs;
- }
-
-fail:
-
- grub_free (path);
- grub_free (prev);
-#ifdef MODE_USTAR
- grub_free (data->linkname);
-#endif
- grub_free (data);
-
- grub_dl_unref (my_mod);
-
- return grub_errno;
-}
-
-static grub_err_t
-grub_cpio_open (grub_file_t file, const char *name_in)
-{
- struct grub_cpio_data *data;
- grub_disk_addr_t ofs;
- char *fn;
- char *name = grub_strdup (name_in + 1);
- int symlinknest = 0;
-
- if (!name)
- return grub_errno;
-
- canonicalize (name);
-
- grub_dl_ref (my_mod);
-
- data = grub_cpio_mount (file->device->disk);
- if (!data)
- {
- grub_free (name);
- return grub_errno;
- }
-
- data->hofs = 0;
- while (1)
- {
- grub_uint32_t mode;
- int restart;
-
- if (grub_cpio_find_file (data, &fn, NULL, &ofs, &mode))
- goto fail;
-
- if (!ofs)
- {
- grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("file `%s' not found"), name_in);
- break;
- }
-
- if (handle_symlink (data, fn, &name, mode, &restart))
- {
- grub_free (fn);
- goto fail;
- }
-
- if (restart)
- {
- ofs = 0;
- if (++symlinknest == 8)
- {
- grub_error (GRUB_ERR_SYMLINK_LOOP,
- N_("too deep nesting of symlinks"));
- goto fail;
- }
- goto no_match;
- }
-
- if (grub_strcmp (name, fn) != 0)
- goto no_match;
-
- file->data = data;
- file->size = data->size;
- grub_free (fn);
- grub_free (name);
-
- return GRUB_ERR_NONE;
-
- no_match:
-
- grub_free (fn);
- data->hofs = ofs;
- }
-
-fail:
-#ifdef MODE_USTAR
- grub_free (data->linkname);
-#endif
- grub_free (data);
- grub_free (name);
-
- grub_dl_unref (my_mod);
-
- return grub_errno;
-}
-
-static grub_ssize_t
-grub_cpio_read (grub_file_t file, char *buf, grub_size_t len)
-{
- struct grub_cpio_data *data;
-
- data = file->data;
- return (grub_disk_read (data->disk, 0, data->dofs + file->offset,
- len, buf)) ? -1 : (grub_ssize_t) len;
-}
-
-static grub_err_t
-grub_cpio_close (grub_file_t file)
-{
- struct grub_cpio_data *data;
-
- data = file->data;
-#ifdef MODE_USTAR
- grub_free (data->linkname);
-#endif
- grub_free (data);
-
- grub_dl_unref (my_mod);
-
- return grub_errno;
-}
+#define FSNAME "cpiofs"
-static struct grub_fs grub_cpio_fs = {
-#ifdef MODE_USTAR
- .name = "tarfs",
-#elif defined (MODE_ODC)
- .name = "odc",
-#elif defined (MODE_NEWC)
- .name = "newc",
-#else
- .name = "cpiofs",
-#endif
- .dir = grub_cpio_dir,
- .open = grub_cpio_open,
- .read = grub_cpio_read,
- .close = grub_cpio_close,
-#ifdef GRUB_UTIL
- .reserved_first_sector = 0,
- .blocklist_install = 0,
-#endif
-};
+#include "cpio_common.c"
-#ifdef MODE_USTAR
-GRUB_MOD_INIT (tar)
-#elif defined (MODE_ODC)
-GRUB_MOD_INIT (odc)
-#elif defined (MODE_NEWC)
-GRUB_MOD_INIT (newc)
-#elif defined (MODE_BIGENDIAN)
-GRUB_MOD_INIT (cpio_be)
-#else
GRUB_MOD_INIT (cpio)
-#endif
{
grub_fs_register (&grub_cpio_fs);
my_mod = mod;
}
-#ifdef MODE_USTAR
-GRUB_MOD_FINI (tar)
-#elif defined (MODE_ODC)
-GRUB_MOD_FINI (odc)
-#elif defined (MODE_NEWC)
-GRUB_MOD_FINI (newc)
-#elif defined (MODE_BIGENDIAN)
-GRUB_MOD_FINI (cpio_be)
-#else
GRUB_MOD_FINI (cpio)
-#endif
{
grub_fs_unregister (&grub_cpio_fs);
}
-#define MODE_BIGENDIAN 1
-#include "cpio.c"
+/* cpio.c - cpio and tar filesystem. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2008,2009,2013 Free Software Foundation, Inc.
+ *
+ * This program 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 program 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 details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+
+#define ALIGN_CPIO(x) (ALIGN_UP ((x), 2))
+#define MAGIC "\x71\xc7"
+
+struct head
+{
+ grub_uint16_t magic[1];
+ grub_uint16_t dev;
+ grub_uint16_t ino;
+ grub_uint16_t mode[1];
+ grub_uint16_t uid;
+ grub_uint16_t gid;
+ grub_uint16_t nlink;
+ grub_uint16_t rdev;
+ grub_uint16_t mtime[2];
+ grub_uint16_t namesize[1];
+ grub_uint16_t filesize[2];
+} __attribute__ ((packed));
+
+static inline unsigned long long
+read_number (const grub_uint16_t *arr, grub_size_t size)
+{
+ long long ret = 0;
+ while (size--)
+ ret = (ret << 16) | grub_be_to_cpu16 (*arr++);
+ return ret;
+}
+
+#define FSNAME "cpiofs_be"
+
+#include "cpio_common.c"
+
+GRUB_MOD_INIT (cpio_be)
+{
+ grub_fs_register (&grub_cpio_fs);
+ my_mod = mod;
+}
+
+GRUB_MOD_FINI (cpio_be)
+{
+ grub_fs_unregister (&grub_cpio_fs);
+}
--- /dev/null
+/* cpio.c - cpio and tar filesystem. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2008,2009,2013 Free Software Foundation, Inc.
+ *
+ * This program 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 program 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 details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/file.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/disk.h>
+#include <grub/dl.h>
+#include <grub/i18n.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+#define ATTR_TYPE 0160000
+#define ATTR_FILE 0100000
+#define ATTR_DIR 0040000
+#define ATTR_LNK 0120000
+
+struct grub_cpio_data
+{
+ grub_disk_t disk;
+ grub_off_t hofs;
+ grub_off_t dofs;
+ grub_off_t size;
+#ifdef MODE_USTAR
+ char *linkname;
+ grub_size_t linkname_alloc;
+#endif
+};
+
+static grub_dl_t my_mod;
+
+static inline void
+canonicalize (char *name)
+{
+ char *iptr, *optr;
+ for (iptr = name, optr = name; *iptr; )
+ {
+ while (*iptr == '/')
+ iptr++;
+ if (iptr[0] == '.' && (iptr[1] == '/' || iptr[1] == 0))
+ {
+ iptr += 2;
+ continue;
+ }
+ if (iptr[0] == '.' && iptr[1] == '.' && (iptr[2] == '/' || iptr[2] == 0))
+ {
+ iptr += 3;
+ if (optr == name)
+ continue;
+ for (optr -= 2; optr >= name && *optr != '/'; optr--);
+ optr++;
+ continue;
+ }
+ while (*iptr && *iptr != '/')
+ *optr++ = *iptr++;
+ if (*iptr)
+ *optr++ = *iptr++;
+ }
+ *optr = 0;
+}
+
+static grub_err_t
+grub_cpio_find_file (struct grub_cpio_data *data, char **name,
+ grub_int32_t *mtime, grub_disk_addr_t *ofs,
+ grub_uint32_t *mode)
+{
+#ifndef MODE_USTAR
+ struct head hd;
+ grub_size_t namesize;
+ grub_uint32_t modeval;
+
+ if (grub_disk_read (data->disk, 0, data->hofs, sizeof (hd), &hd))
+ return grub_errno;
+
+ if (grub_memcmp (hd.magic, MAGIC, sizeof (hd.magic)) != 0
+#ifdef MAGIC2
+ && grub_memcmp (hd.magic, MAGIC2, sizeof (hd.magic)) != 0
+#endif
+ )
+ return grub_error (GRUB_ERR_BAD_FS, "invalid cpio archive");
+ data->size = read_number (hd.filesize, ARRAY_SIZE (hd.filesize));
+ if (mtime)
+ *mtime = read_number (hd.mtime, ARRAY_SIZE (hd.mtime));
+ modeval = read_number (hd.mode, ARRAY_SIZE (hd.mode));
+ namesize = read_number (hd.namesize, ARRAY_SIZE (hd.namesize));
+
+ if (mode)
+ *mode = modeval;
+
+ *name = grub_malloc (namesize + 1);
+ if (*name == NULL)
+ return grub_errno;
+
+ if (grub_disk_read (data->disk, 0, data->hofs + sizeof (hd),
+ namesize, *name))
+ {
+ grub_free (*name);
+ return grub_errno;
+ }
+ (*name)[namesize] = 0;
+
+ if (data->size == 0 && modeval == 0 && namesize == 11
+ && grub_memcmp(*name, "TRAILER!!!", 11) == 0)
+ {
+ *ofs = 0;
+ grub_free (*name);
+ return GRUB_ERR_NONE;
+ }
+
+ canonicalize (*name);
+
+ data->dofs = data->hofs + ALIGN_CPIO (sizeof (hd) + namesize);
+ *ofs = data->dofs + ALIGN_CPIO (data->size);
+#else
+ struct head hd;
+ int reread = 0, have_longname = 0, have_longlink = 0;
+
+ for (reread = 0; reread < 3; reread++)
+ {
+ if (grub_disk_read (data->disk, 0, data->hofs, sizeof (hd), &hd))
+ return grub_errno;
+
+ if (!hd.name[0] && !hd.prefix[0])
+ {
+ *ofs = 0;
+ return GRUB_ERR_NONE;
+ }
+
+ if (grub_memcmp (hd.magic, MAGIC, sizeof (MAGIC) - 1))
+ return grub_error (GRUB_ERR_BAD_FS, "invalid tar archive");
+
+ if (hd.typeflag == 'L')
+ {
+ grub_err_t err;
+ grub_size_t namesize = read_number (hd.size, sizeof (hd.size));
+ *name = grub_malloc (namesize + 1);
+ if (*name == NULL)
+ return grub_errno;
+ err = grub_disk_read (data->disk, 0,
+ data->hofs + GRUB_DISK_SECTOR_SIZE, namesize,
+ *name);
+ (*name)[namesize] = 0;
+ if (err)
+ return err;
+ data->hofs += GRUB_DISK_SECTOR_SIZE
+ + ((namesize + GRUB_DISK_SECTOR_SIZE - 1) &
+ ~(GRUB_DISK_SECTOR_SIZE - 1));
+ have_longname = 1;
+ continue;
+ }
+
+ if (hd.typeflag == 'K')
+ {
+ grub_err_t err;
+ grub_size_t linksize = read_number (hd.size, sizeof (hd.size));
+ if (data->linkname_alloc < linksize + 1)
+ {
+ char *n;
+ n = grub_malloc (2 * (linksize + 1));
+ if (!n)
+ return grub_errno;
+ grub_free (data->linkname);
+ data->linkname = n;
+ data->linkname_alloc = 2 * (linksize + 1);
+ }
+
+ err = grub_disk_read (data->disk, 0,
+ data->hofs + GRUB_DISK_SECTOR_SIZE, linksize,
+ data->linkname);
+ if (err)
+ return err;
+ data->linkname[linksize] = 0;
+ data->hofs += GRUB_DISK_SECTOR_SIZE
+ + ((linksize + GRUB_DISK_SECTOR_SIZE - 1) &
+ ~(GRUB_DISK_SECTOR_SIZE - 1));
+ have_longlink = 1;
+ continue;
+ }
+
+ if (!have_longname)
+ {
+ grub_size_t extra_size = 0;
+
+ while (extra_size < sizeof (hd.prefix)
+ && hd.prefix[extra_size])
+ extra_size++;
+ *name = grub_malloc (sizeof (hd.name) + extra_size + 2);
+ if (*name == NULL)
+ return grub_errno;
+ if (hd.prefix[0])
+ {
+ grub_memcpy (*name, hd.prefix, extra_size);
+ (*name)[extra_size++] = '/';
+ }
+ grub_memcpy (*name + extra_size, hd.name, sizeof (hd.name));
+ (*name)[extra_size + sizeof (hd.name)] = 0;
+ }
+
+ data->size = read_number (hd.size, sizeof (hd.size));
+ data->dofs = data->hofs + GRUB_DISK_SECTOR_SIZE;
+ *ofs = data->dofs + ((data->size + GRUB_DISK_SECTOR_SIZE - 1) &
+ ~(GRUB_DISK_SECTOR_SIZE - 1));
+ if (mtime)
+ *mtime = read_number (hd.mtime, sizeof (hd.mtime));
+ if (mode)
+ {
+ *mode = read_number (hd.mode, sizeof (hd.mode));
+ switch (hd.typeflag)
+ {
+ /* Hardlink. */
+ case '1':
+ /* Symlink. */
+ case '2':
+ *mode |= ATTR_LNK;
+ break;
+ case '0':
+ *mode |= ATTR_FILE;
+ break;
+ case '5':
+ *mode |= ATTR_DIR;
+ break;
+ }
+ }
+ if (!have_longlink)
+ {
+ if (data->linkname_alloc < 101)
+ {
+ char *n;
+ n = grub_malloc (101);
+ if (!n)
+ return grub_errno;
+ grub_free (data->linkname);
+ data->linkname = n;
+ data->linkname_alloc = 101;
+ }
+ grub_memcpy (data->linkname, hd.linkname, sizeof (hd.linkname));
+ data->linkname[100] = 0;
+ }
+
+ canonicalize (*name);
+ return GRUB_ERR_NONE;
+ }
+#endif
+ return GRUB_ERR_NONE;
+}
+
+static struct grub_cpio_data *
+grub_cpio_mount (grub_disk_t disk)
+{
+ struct head hd;
+ struct grub_cpio_data *data;
+
+ if (grub_disk_read (disk, 0, 0, sizeof (hd), &hd))
+ goto fail;
+
+ if (grub_memcmp (hd.magic, MAGIC, sizeof (MAGIC) - 1)
+#ifdef MAGIC2
+ && grub_memcmp (hd.magic, MAGIC2, sizeof (MAGIC2) - 1)
+#endif
+ )
+ goto fail;
+
+ data = (struct grub_cpio_data *) grub_zalloc (sizeof (*data));
+ if (!data)
+ goto fail;
+
+ data->disk = disk;
+
+ return data;
+
+fail:
+ grub_error (GRUB_ERR_BAD_FS, "not a " FSNAME " filesystem");
+ return 0;
+}
+
+static grub_err_t
+handle_symlink (struct grub_cpio_data *data,
+ const char *fn, char **name,
+ grub_uint32_t mode, int *restart)
+{
+ grub_size_t flen;
+ char *target;
+#ifndef MODE_USTAR
+ grub_err_t err;
+#endif
+ char *ptr;
+ char *lastslash;
+ grub_size_t prefixlen;
+ char *rest;
+ grub_size_t size;
+
+ *restart = 0;
+
+ if ((mode & ATTR_TYPE) != ATTR_LNK)
+ return GRUB_ERR_NONE;
+ flen = grub_strlen (fn);
+ if (grub_memcmp (*name, fn, flen) != 0
+ || ((*name)[flen] != 0 && (*name)[flen] != '/'))
+ return GRUB_ERR_NONE;
+ rest = *name + flen;
+ lastslash = rest;
+ if (*rest)
+ rest++;
+ while (lastslash >= *name && *lastslash != '/')
+ lastslash--;
+ if (lastslash >= *name)
+ prefixlen = lastslash - *name;
+ else
+ prefixlen = 0;
+
+ if (prefixlen)
+ prefixlen++;
+
+#ifdef MODE_USTAR
+ size = grub_strlen (data->linkname);
+#else
+ size = data->size;
+#endif
+ if (size == 0)
+ return GRUB_ERR_NONE;
+ target = grub_malloc (size + grub_strlen (*name) + 2);
+ if (!target)
+ return grub_errno;
+
+#ifdef MODE_USTAR
+ grub_memcpy (target + prefixlen, data->linkname, size);
+#else
+ err = grub_disk_read (data->disk, 0, data->dofs, data->size,
+ target + prefixlen);
+ if (err)
+ return err;
+#endif
+ if (target[prefixlen] == '/')
+ {
+ grub_memmove (target, target + prefixlen, size);
+ ptr = target + size;
+ ptr = grub_stpcpy (ptr, rest);
+ *ptr = 0;
+ grub_dprintf ("cpio", "symlink redirected %s to %s\n",
+ *name, target);
+ grub_free (*name);
+
+ canonicalize (target);
+ *name = target;
+ *restart = 1;
+ return GRUB_ERR_NONE;
+ }
+ if (prefixlen)
+ {
+ grub_memcpy (target, *name, prefixlen);
+ target[prefixlen-1] = '/';
+ }
+ ptr = target + prefixlen + size;
+ ptr = grub_stpcpy (ptr, rest);
+ *ptr = 0;
+ grub_dprintf ("cpio", "symlink redirected %s to %s\n",
+ *name, target);
+ grub_free (*name);
+ canonicalize (target);
+ *name = target;
+ *restart = 1;
+ return GRUB_ERR_NONE;
+}
+
+static grub_err_t
+grub_cpio_dir (grub_device_t device, const char *path_in,
+ grub_fs_dir_hook_t hook, void *hook_data)
+{
+ struct grub_cpio_data *data;
+ grub_disk_addr_t ofs;
+ char *prev, *name, *path, *ptr;
+ grub_size_t len;
+ int symlinknest = 0;
+
+ path = grub_strdup (path_in + 1);
+ if (!path)
+ return grub_errno;
+ canonicalize (path);
+ for (ptr = path + grub_strlen (path) - 1; ptr >= path && *ptr == '/'; ptr--)
+ *ptr = 0;
+
+ grub_dl_ref (my_mod);
+
+ prev = 0;
+
+ data = grub_cpio_mount (device->disk);
+ if (!data)
+ {
+ grub_free (path);
+ return grub_errno;
+ }
+
+ len = grub_strlen (path);
+ data->hofs = 0;
+ while (1)
+ {
+ grub_int32_t mtime;
+ grub_uint32_t mode;
+ grub_err_t err;
+
+ if (grub_cpio_find_file (data, &name, &mtime, &ofs, &mode))
+ goto fail;
+
+ if (!ofs)
+ break;
+
+ if (grub_memcmp (path, name, len) == 0
+ && (name[len] == 0 || name[len] == '/' || len == 0))
+ {
+ char *p, *n;
+
+ n = name + len;
+ while (*n == '/')
+ n++;
+
+ p = grub_strchr (n, '/');
+ if (p)
+ *p = 0;
+
+ if (((!prev) || (grub_strcmp (prev, name) != 0)) && *n != 0)
+ {
+ struct grub_dirhook_info info;
+ grub_memset (&info, 0, sizeof (info));
+ info.dir = (p != NULL) || ((mode & ATTR_TYPE) == ATTR_DIR);
+ info.mtime = mtime;
+ info.mtimeset = 1;
+
+ if (hook (n, &info, hook_data))
+ {
+ grub_free (name);
+ goto fail;
+ }
+ grub_free (prev);
+ prev = name;
+ }
+ else
+ {
+ int restart = 0;
+ err = handle_symlink (data, name, &path, mode, &restart);
+ grub_free (name);
+ if (err)
+ goto fail;
+ if (restart)
+ {
+ len = grub_strlen (path);
+ if (++symlinknest == 8)
+ {
+ grub_error (GRUB_ERR_SYMLINK_LOOP,
+ N_("too deep nesting of symlinks"));
+ goto fail;
+ }
+ ofs = 0;
+ }
+ }
+ }
+ else
+ grub_free (name);
+ data->hofs = ofs;
+ }
+
+fail:
+
+ grub_free (path);
+ grub_free (prev);
+#ifdef MODE_USTAR
+ grub_free (data->linkname);
+#endif
+ grub_free (data);
+
+ grub_dl_unref (my_mod);
+
+ return grub_errno;
+}
+
+static grub_err_t
+grub_cpio_open (grub_file_t file, const char *name_in)
+{
+ struct grub_cpio_data *data;
+ grub_disk_addr_t ofs;
+ char *fn;
+ char *name = grub_strdup (name_in + 1);
+ int symlinknest = 0;
+
+ if (!name)
+ return grub_errno;
+
+ canonicalize (name);
+
+ grub_dl_ref (my_mod);
+
+ data = grub_cpio_mount (file->device->disk);
+ if (!data)
+ {
+ grub_free (name);
+ return grub_errno;
+ }
+
+ data->hofs = 0;
+ while (1)
+ {
+ grub_uint32_t mode;
+ int restart;
+
+ if (grub_cpio_find_file (data, &fn, NULL, &ofs, &mode))
+ goto fail;
+
+ if (!ofs)
+ {
+ grub_error (GRUB_ERR_FILE_NOT_FOUND, N_("file `%s' not found"), name_in);
+ break;
+ }
+
+ if (handle_symlink (data, fn, &name, mode, &restart))
+ {
+ grub_free (fn);
+ goto fail;
+ }
+
+ if (restart)
+ {
+ ofs = 0;
+ if (++symlinknest == 8)
+ {
+ grub_error (GRUB_ERR_SYMLINK_LOOP,
+ N_("too deep nesting of symlinks"));
+ goto fail;
+ }
+ goto no_match;
+ }
+
+ if (grub_strcmp (name, fn) != 0)
+ goto no_match;
+
+ file->data = data;
+ file->size = data->size;
+ grub_free (fn);
+ grub_free (name);
+
+ return GRUB_ERR_NONE;
+
+ no_match:
+
+ grub_free (fn);
+ data->hofs = ofs;
+ }
+
+fail:
+#ifdef MODE_USTAR
+ grub_free (data->linkname);
+#endif
+ grub_free (data);
+ grub_free (name);
+
+ grub_dl_unref (my_mod);
+
+ return grub_errno;
+}
+
+static grub_ssize_t
+grub_cpio_read (grub_file_t file, char *buf, grub_size_t len)
+{
+ struct grub_cpio_data *data;
+
+ data = file->data;
+ return (grub_disk_read (data->disk, 0, data->dofs + file->offset,
+ len, buf)) ? -1 : (grub_ssize_t) len;
+}
+
+static grub_err_t
+grub_cpio_close (grub_file_t file)
+{
+ struct grub_cpio_data *data;
+
+ data = file->data;
+#ifdef MODE_USTAR
+ grub_free (data->linkname);
+#endif
+ grub_free (data);
+
+ grub_dl_unref (my_mod);
+
+ return grub_errno;
+}
+
+static struct grub_fs grub_cpio_fs = {
+ .name = FSNAME,
+ .dir = grub_cpio_dir,
+ .open = grub_cpio_open,
+ .read = grub_cpio_read,
+ .close = grub_cpio_close,
+#ifdef GRUB_UTIL
+ .reserved_first_sector = 0,
+ .blocklist_install = 0,
+#endif
+};
-#define MODE_NEWC 1
-#include "cpio.c"
+/* cpio.c - cpio and tar filesystem. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2008,2009,2013 Free Software Foundation, Inc.
+ *
+ * This program 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 program 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 details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+
+#define ALIGN_CPIO(x) (ALIGN_UP ((x), 4))
+#define MAGIC "070701"
+#define MAGIC2 "070702"
+struct head
+{
+ char magic[6];
+ char ino[8];
+ char mode[8];
+ char uid[8];
+ char gid[8];
+ char nlink[8];
+ char mtime[8];
+ char filesize[8];
+ char devmajor[8];
+ char devminor[8];
+ char rdevmajor[8];
+ char rdevminor[8];
+ char namesize[8];
+ char check[8];
+} __attribute__ ((packed));
+
+static inline unsigned long long
+read_number (const char *str, grub_size_t size)
+{
+ unsigned long long ret = 0;
+ while (size-- && grub_isxdigit (*str))
+ {
+ char dig = *str++;
+ if (dig >= '0' && dig <= '9')
+ dig &= 0xf;
+ else if (dig >= 'a' && dig <= 'f')
+ dig -= 'a' - 10;
+ else
+ dig -= 'A' - 10;
+ ret = (ret << 4) | (dig);
+ }
+ return ret;
+}
+
+#define FSNAME "newc"
+
+#include "cpio_common.c"
+
+GRUB_MOD_INIT (newc)
+{
+ grub_fs_register (&grub_cpio_fs);
+ my_mod = mod;
+}
+
+GRUB_MOD_FINI (newc)
+{
+ grub_fs_unregister (&grub_cpio_fs);
+}
-#define MODE_ODC 1
-#include "cpio.c"
+/* cpio.c - cpio and tar filesystem. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2008,2009,2013 Free Software Foundation, Inc.
+ *
+ * This program 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 program 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 details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+
+#define ALIGN_CPIO(x) x
+#define MAGIC "070707"
+struct head
+{
+ char magic[6];
+ char dev[6];
+ char ino[6];
+ char mode[6];
+ char uid[6];
+ char gid[6];
+ char nlink[6];
+ char rdev[6];
+ char mtime[11];
+ char namesize[6];
+ char filesize[11];
+} __attribute__ ((packed));
+
+static inline unsigned long long
+read_number (const char *str, grub_size_t size)
+{
+ unsigned long long ret = 0;
+ while (size-- && *str >= '0' && *str <= '7')
+ ret = (ret << 3) | (*str++ & 0xf);
+ return ret;
+}
+
+#define FSNAME "odc"
+
+#include "cpio_common.c"
+
+GRUB_MOD_INIT (odc)
+{
+ grub_fs_register (&grub_cpio_fs);
+ my_mod = mod;
+}
+
+GRUB_MOD_FINI (odc)
+{
+ grub_fs_unregister (&grub_cpio_fs);
+}
+/* cpio.c - cpio and tar filesystem. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2007,2008,2009,2013 Free Software Foundation, Inc.
+ *
+ * This program 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 program 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 details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/misc.h>
+
#define MODE_USTAR 1
-#include "cpio.c"
+
+/* tar support */
+#define MAGIC "ustar"
+struct head
+{
+ char name[100];
+ char mode[8];
+ char uid[8];
+ char gid[8];
+ char size[12];
+ char mtime[12];
+ char chksum[8];
+ char typeflag;
+ char linkname[100];
+ char magic[6];
+ char version[2];
+ char uname[32];
+ char gname[32];
+ char devmajor[8];
+ char devminor[8];
+ char prefix[155];
+} __attribute__ ((packed));
+
+static inline unsigned long long
+read_number (const char *str, grub_size_t size)
+{
+ unsigned long long ret = 0;
+ while (size-- && *str >= '0' && *str <= '7')
+ ret = (ret << 3) | (*str++ & 0xf);
+ return ret;
+}
+
+#define FSNAME "tarfs"
+
+#include "cpio_common.c"
+
+GRUB_MOD_INIT (tar)
+{
+ grub_fs_register (&grub_cpio_fs);
+ my_mod = mod;
+}
+
+GRUB_MOD_FINI (tar)
+{
+ grub_fs_unregister (&grub_cpio_fs);
+}
grub_uint8_t sectors_per_cluster;
grub_uint16_t num_reserved_sectors;
grub_uint8_t num_fats;
+ /* 0x10 */
grub_uint16_t num_root_entries;
grub_uint16_t num_total_sectors_16;
grub_uint8_t media;
+ /*0 x15 */
grub_uint16_t sectors_per_fat_16;
grub_uint16_t sectors_per_track;
+ /*0 x19 */
grub_uint16_t num_heads;
+ /*0 x1b */
grub_uint32_t num_hidden_sectors;
+ /* 0x1f */
grub_uint32_t num_total_sectors_32;
union
{
projects / thirdparty / grub.git / commitdiff
