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Felix Zielcke 2009-11-21 23:25:20 +01:00
commit 8e3be195c4
2 changed files with 72 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2009-11-21 Samuel Thibault <samuel.thibault@ens-lyon.org>
* util/getroot.c [__GNU__]: Include <hurd.h>, <hurd/lookup.h>, and
<hurd/fs.h>
[__GNU__] (grub_guess_root_device): Call file_name_lookup and
file_get_storage_info to implement grub_guess_root_device.
2009-11-21 Felix Zielcke <fzielcke@z-51.de>
* Makefile.in (target): Use make's builtin $(shell) function

66
util/getroot.c
View file

@ -30,6 +30,12 @@
# define DEV_CYGDRIVE_MAJOR 98
#endif
#ifdef __GNU__
#include <hurd.h>
#include <hurd/lookup.h>
#include <hurd/fs.h>
#endif
#include <grub/util/misc.h>
#include <grub/util/hostdisk.h>
#include <grub/util/getroot.h>
@ -378,8 +384,65 @@ find_cygwin_root_device (const char *path, dev_t dev)
char *
grub_guess_root_device (const char *dir)
{
struct stat st;
char *os_dev;
#ifdef __GNU__
file_t file;
mach_port_t *ports;
int *ints;
loff_t *offsets;
char *data;
error_t err;
mach_msg_type_number_t num_ports = 0, num_ints = 0, num_offsets = 0, data_len = 0;
size_t name_len;
file = file_name_lookup (dir, 0, 0);
if (file == MACH_PORT_NULL)
return 0;
err = file_get_storage_info (file,
&ports, &num_ports,
&ints, &num_ints,
&offsets, &num_offsets,
&data, &data_len);
if (num_ints < 1)
grub_util_error ("Storage info for `%s' does not include type", dir);
if (ints[0] != STORAGE_DEVICE)
grub_util_error ("Filesystem of `%s' is not stored on local disk", dir);
if (num_ints < 5)
grub_util_error ("Storage info for `%s' does not include name", dir);
name_len = ints[4];
if (name_len < data_len)
grub_util_error ("Bogus name length for storage info for `%s'", dir);
if (data[name_len - 1] != '\0')
grub_util_error ("Storage name for `%s' not NUL-terminated", dir);
os_dev = xmalloc (strlen ("/dev/") + data_len);
memcpy (os_dev, "/dev/", strlen ("/dev/"));
memcpy (os_dev + strlen ("/dev/"), data, data_len);
if (ports && num_ports > 0)
{
mach_msg_type_number_t i;
for (i = 0; i < num_ports; i++)
{
mach_port_t port = ports[i];
if (port != MACH_PORT_NULL)
mach_port_deallocate (mach_task_self(), port);
}
munmap ((caddr_t) ports, num_ports * sizeof (*ports));
}
if (ints && num_ints > 0)
munmap ((caddr_t) ints, num_ints * sizeof (*ints));
if (offsets && num_offsets > 0)
munmap ((caddr_t) offsets, num_offsets * sizeof (*offsets));
if (data && data_len > 0)
munmap (data, data_len);
mach_port_deallocate (mach_task_self (), file);
#else /* !__GNU__ */
struct stat st;
if (stat (dir, &st) < 0)
grub_util_error ("Cannot stat `%s'", dir);
@ -393,6 +456,7 @@ grub_guess_root_device (const char *dir)
/* This might be truly slow, but is there any better way? */
os_dev = find_root_device ("/dev", st.st_dev);
#endif
#endif /* !__GNU__ */
return os_dev;
}