2008-05-16 Christian Franke <franke@computer.org>
* util/biosdisk.c: [__CYGWIN__] Add includes. (grub_util_biosdisk_open): Use Linux code also for Cygwin. (get_os_disk): Move variable declarations to OS specific parts to avoid warning. [__GNU__] (get_os_disk): Fix /dev/sdXsN case. [__CYGWIN__] (get_os_disk): Add Cygwin /dev/sdXN device names. (grub_util_biosdisk_get_grub_dev): Use Linux code also for Cygwin. * util/getroot.c: [__CYGWIN__] Add includes. (strip_extra_slashes): Fix "/" case. [__CYGWIN__] (get_win32_path): New function. [__CYGWIN__] (grub_get_prefix): Add conversion to win32 path. [__CYGWIN__] (find_root_device): Disable. [__CYGWIN__] (get_bootsec_serial): New function. [__CYGWIN__] (find_cygwin_root_device): Likewise. [__linux__] (grub_guess_root_device): Add early returns to simplify structure. [__CYGWIN__] (grub_guess_root_device): Call find_cygwin_root_device. [__linux__] (grub_util_get_dev_abstraction): Enable LVM and RAID check for Linux only.
This commit is contained in:
chrfranke
parent
a079699e97
commit
eedf167fef
3 changed files with 199 additions and 18 deletions
23
ChangeLog
23
ChangeLog
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@ -1,3 +1,26 @@
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2008-05-16 Christian Franke <franke@computer.org>
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* util/biosdisk.c: [__CYGWIN__] Add includes.
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(grub_util_biosdisk_open): Use Linux code also for Cygwin.
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(get_os_disk): Move variable declarations to OS specific
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parts to avoid warning.
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[__GNU__] (get_os_disk): Fix /dev/sdXsN case.
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[__CYGWIN__] (get_os_disk): Add Cygwin /dev/sdXN device names.
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(grub_util_biosdisk_get_grub_dev): Use Linux code also for
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Cygwin.
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* util/getroot.c: [__CYGWIN__] Add includes.
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(strip_extra_slashes): Fix "/" case.
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[__CYGWIN__] (get_win32_path): New function.
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[__CYGWIN__] (grub_get_prefix): Add conversion to win32 path.
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[__CYGWIN__] (find_root_device): Disable.
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[__CYGWIN__] (get_bootsec_serial): New function.
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[__CYGWIN__] (find_cygwin_root_device): Likewise.
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[__linux__] (grub_guess_root_device): Add early returns to simplify
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structure.
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[__CYGWIN__] (grub_guess_root_device): Call find_cygwin_root_device.
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[__linux__] (grub_util_get_dev_abstraction): Enable LVM and RAID
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check for Linux only.
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2008-05-15 Bean <bean123ch@gmail.com>
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* kern/i386/pc/startup.S (grub_console_getkey): Workaround for the
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@ -77,6 +77,14 @@ struct hd_geometry
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# endif /* ! LOOP_MAJOR */
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#endif /* __linux__ */
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#ifdef __CYGWIN__
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# include <sys/ioctl.h>
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# include <cygwin/fs.h> /* BLKGETSIZE64 */
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# include <cygwin/hdreg.h> /* HDIO_GETGEO */
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# define MAJOR(dev) ((unsigned) ((dev) >> 16))
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# define FLOPPY_MAJOR 2
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#endif
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static char *map[256];
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#ifdef __linux__
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@ -162,7 +170,7 @@ grub_util_biosdisk_open (const char *name, grub_disk_t disk)
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disk->id = drive;
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/* Get the size. */
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#ifdef __linux__
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#if defined(__linux__) || defined(__CYGWIN__)
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{
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unsigned long long nr;
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int fd;
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@ -616,16 +624,14 @@ make_device_name (int drive, int dos_part, int bsd_part)
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static char *
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get_os_disk (const char *os_dev)
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{
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char *path, *p;
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#if defined(__linux__)
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path = xmalloc (PATH_MAX);
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char *path = xmalloc (PATH_MAX);
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if (! realpath (os_dev, path))
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return 0;
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if (strncmp ("/dev/", path, 5) == 0)
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{
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p = path + 5;
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char *p = path + 5;
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/* If this is an IDE disk. */
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if (strncmp ("ide/", p, 4) == 0)
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@ -692,15 +698,21 @@ get_os_disk (const char *os_dev)
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return path;
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#elif defined(__GNU__)
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path = xstrdup (os_dev);
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char *path = xstrdup (os_dev);
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if (strncmp ("/dev/sd", path, 7) == 0 || strncmp ("/dev/hd", path, 7) == 0)
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{
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p = strchr (path, 's');
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char *p = strchr (path + 7, 's');
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if (p)
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*p = '\0';
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}
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return path;
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#elif defined(__CYGWIN__)
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char *path = xstrdup (os_dev);
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if (strncmp ("/dev/sd", path, 7) == 0 && 'a' <= path[7] && path[7] <= 'z')
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path[8] = 0;
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return path;
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#else
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# warning "The function `get_os_disk' might not work on your OS correctly."
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return xstrdup (os_dev);
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@ -751,11 +763,15 @@ grub_util_biosdisk_get_grub_dev (const char *os_dev)
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if (! S_ISBLK (st.st_mode))
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return make_device_name (drive, -1, -1);
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#if defined(__linux__)
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#if defined(__linux__) || defined(__CYGWIN__)
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/* Linux counts partitions uniformly, whether a BSD partition or a DOS
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partition, so mapping them to GRUB devices is not trivial.
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Here, get the start sector of a partition by HDIO_GETGEO, and
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compare it with each partition GRUB recognizes. */
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compare it with each partition GRUB recognizes.
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Cygwin /dev/sdXN emulation uses Windows partition mapping. It
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does not count the extended partition and missing primary
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partitions. Use same method as on Linux here. */
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{
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char *name;
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grub_disk_t disk;
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160
util/getroot.c
160
util/getroot.c
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@ -22,6 +22,13 @@
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#include <string.h>
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#include <dirent.h>
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#ifdef __CYGWIN__
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# include <sys/fcntl.h>
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# include <sys/cygwin.h>
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# include <limits.h>
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# define DEV_CYGDRIVE_MAJOR 98
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#endif
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#include <grub/util/misc.h>
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#include <grub/util/biosdisk.h>
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#include <grub/util/getroot.h>
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@ -40,7 +47,8 @@ strip_extra_slashes (char *dir)
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}
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else if (p[1] == '\0')
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{
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p[0] = '\0';
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if (p > dir)
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p[0] = '\0';
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break;
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}
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@ -64,6 +72,30 @@ xgetcwd (void)
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return path;
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}
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#ifdef __CYGWIN__
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/* Convert POSIX path to Win32 path,
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remove drive letter, replace backslashes. */
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static char *
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get_win32_path (const char *path)
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{
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char winpath[PATH_MAX];
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cygwin_conv_to_full_win32_path (path, winpath);
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int len = strlen (winpath);
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if (len > 2 && winpath[1] == ':')
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{
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len -= 2;
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memmove (winpath, winpath + 2, len + 1);
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}
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int i;
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for (i = 0; i < len; i++)
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if (winpath[i] == '\\')
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winpath[i] = '/';
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return xstrdup (winpath);
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}
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#endif
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char *
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grub_get_prefix (const char *dir)
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{
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@ -116,6 +148,19 @@ grub_get_prefix (const char *dir)
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if (chdir (saved_cwd) < 0)
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grub_util_error ("Cannot change directory to `%s'", dir);
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#ifdef __CYGWIN__
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if (st.st_dev != (DEV_CYGDRIVE_MAJOR << 16))
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{
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/* Reached some mount point not below /cygdrive.
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GRUB does not know Cygwin's emulated mounts,
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convert to Win32 path. */
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grub_util_info ("Cygwin prefix = %s", prefix);
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char * wprefix = get_win32_path (prefix);
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free (prefix);
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prefix = wprefix;
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}
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#endif
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free (saved_cwd);
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free (abs_dir);
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free (prev_dir);
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return prefix;
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}
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#ifndef __CYGWIN__
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static char *
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find_root_device (const char *dir, dev_t dev)
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{
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return 0;
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}
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#else /* __CYGWIN__ */
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/* Read drive/partition serial number from mbr/boot sector,
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return 0 on read error, ~0 on unknown serial. */
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static unsigned
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get_bootsec_serial (const char *os_dev, int mbr)
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{
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/* Read boot sector. */
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int fd = open (os_dev, O_RDONLY);
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if (fd < 0)
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return 0;
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unsigned char buf[0x200];
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int n = read (fd, buf, sizeof (buf));
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close (fd);
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if (n != sizeof(buf))
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return 0;
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/* Check signature. */
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if (!(buf[0x1fe] == 0x55 && buf[0x1ff] == 0xaa))
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return ~0;
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/* Serial number offset depends on boot sector type. */
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if (mbr)
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n = 0x1b8;
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else if (memcmp (buf + 0x03, "NTFS", 4) == 0)
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n = 0x048;
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else if (memcmp (buf + 0x52, "FAT32", 5) == 0)
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n = 0x043;
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else if (memcmp (buf + 0x36, "FAT", 3) == 0)
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n = 0x027;
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else
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return ~0;
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unsigned serial = *(unsigned *)(buf + n);
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if (serial == 0)
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return ~0;
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return serial;
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}
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static char *
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find_cygwin_root_device (const char *path, dev_t dev)
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{
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/* No root device for /cygdrive. */
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if (dev == (DEV_CYGDRIVE_MAJOR << 16))
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return 0;
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/* Convert to full POSIX and Win32 path. */
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char fullpath[PATH_MAX], winpath[PATH_MAX];
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cygwin_conv_to_full_posix_path (path, fullpath);
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cygwin_conv_to_full_win32_path (fullpath, winpath);
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/* If identical, this is no real filesystem path. */
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if (strcmp (fullpath, winpath) == 0)
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return 0;
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/* Check for floppy drive letter. */
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if (winpath[0] && winpath[1] == ':' && strchr ("AaBb", winpath[0]))
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return xstrdup (strchr ("Aa", winpath[0]) ? "/dev/fd0" : "/dev/fd1");
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/* Cygwin returns the partition serial number in stat.st_dev.
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This is never identical to the device number of the emulated
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/dev/sdXN device, so above find_root_device () does not work.
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Search the partion with the same serial in boot sector instead. */
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char devpath[sizeof ("/dev/sda15") + 13]; /* Size + Paranoia. */
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int d;
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for (d = 'a'; d <= 'z'; d++)
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{
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sprintf (devpath, "/dev/sd%c", d);
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if (get_bootsec_serial (devpath, 1) == 0)
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continue;
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int p;
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for (p = 1; p <= 15; p++)
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{
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sprintf (devpath, "/dev/sd%c%d", d, p);
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unsigned ser = get_bootsec_serial (devpath, 0);
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if (ser == 0)
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break;
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if (ser != (unsigned)~0 && dev == (dev_t)ser)
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return xstrdup (devpath);
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}
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}
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return 0;
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}
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#endif /* __CYGWIN__ */
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char *
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grub_guess_root_device (const char *dir)
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{
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@ -230,17 +363,24 @@ grub_guess_root_device (const char *dir)
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we don't do this, we get useless device names like /dev/dm-0 for
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LVM. */
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os_dev = find_root_device ("/dev/mapper", st.st_dev);
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if (os_dev)
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return os_dev;
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/* The same applies to /dev/evms directory (for EVMS volumes). */
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if (! os_dev)
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os_dev = find_root_device ("/dev/evms", st.st_dev);
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if (! os_dev)
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os_dev = find_root_device ("/dev/evms", st.st_dev);
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if (os_dev)
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return os_dev;
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#endif
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#ifdef __CYGWIN__
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/* Cygwin specific function. */
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os_dev = find_cygwin_root_device (dir, st.st_dev);
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#else
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/* This might be truly slow, but is there any better way? */
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os_dev = find_root_device ("/dev", st.st_dev);
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#endif
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{
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/* This might be truly slow, but is there any better way? */
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os_dev = find_root_device ("/dev", st.st_dev);
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}
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return os_dev;
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}
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@ -248,6 +388,7 @@ grub_guess_root_device (const char *dir)
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int
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grub_util_get_dev_abstraction (const char *os_dev)
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{
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#ifdef __linux__
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/* Check for LVM. */
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if (!strncmp (os_dev, "/dev/mapper/", 12))
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return GRUB_DEV_ABSTRACTION_LVM;
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@ -255,6 +396,7 @@ grub_util_get_dev_abstraction (const char *os_dev)
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/* Check for RAID. */
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if (!strncmp (os_dev, "/dev/md", 7))
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return GRUB_DEV_ABSTRACTION_RAID;
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#endif
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/* No abstraction found. */
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return GRUB_DEV_ABSTRACTION_NONE;
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