diff options
Diffstat (limited to 'grub-core/osdep/bsd/getroot.c')
| -rw-r--r-- | grub-core/osdep/bsd/getroot.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/grub-core/osdep/bsd/getroot.c b/grub-core/osdep/bsd/getroot.c new file mode 100644 index 0000000..dbc6a2f --- /dev/null +++ b/grub-core/osdep/bsd/getroot.c @@ -0,0 +1,204 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 1999,2000,2001,2002,2003,2006,2007,2008,2009,2010,2011,2012,2013 Free Software Foundation, Inc. + * + * GRUB 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. + * + * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <config-util.h> +#include <config.h> + +#include <sys/stat.h> +#include <sys/types.h> +#include <assert.h> +#include <fcntl.h> +#include <unistd.h> +#include <string.h> +#include <dirent.h> +#include <errno.h> +#include <error.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#ifdef HAVE_LIMITS_H +#include <limits.h> +#endif + +#include <grub/types.h> + +#include <grub/util/misc.h> + +#include <grub/mm.h> +#include <grub/misc.h> +#include <grub/emu/misc.h> +#include <grub/emu/hostdisk.h> +#include <grub/emu/getroot.h> + +#include <sys/wait.h> + +# include <sys/ioctl.h> +# include <sys/disklabel.h> /* struct disklabel */ +# include <sys/disk.h> /* struct dkwedge_info */ +# ifdef HAVE_GETRAWPARTITION +# include <util.h> /* getrawpartition */ +# endif /* HAVE_GETRAWPARTITION */ +#if defined(__NetBSD__) +# include <sys/fdio.h> +#endif +#if defined(__OpenBSD__) +# include <sys/dkio.h> +#endif + +char * +grub_util_part_to_disk (const char *os_dev, struct stat *st, + int *is_part) +{ + int rawpart = -1; + + if (! S_ISCHR (st->st_mode)) + { + *is_part = 0; + return xstrdup (os_dev); + } + +# ifdef HAVE_GETRAWPARTITION + rawpart = getrawpartition(); +# endif /* HAVE_GETRAWPARTITION */ + if (rawpart < 0) + return xstrdup (os_dev); + +#if defined(__NetBSD__) + /* NetBSD disk wedges are of the form "/dev/rdk.*". */ + if (strncmp ("/dev/rdk", os_dev, sizeof("/dev/rdk") - 1) == 0) + { + struct dkwedge_info dkw; + int fd; + + fd = open (os_dev, O_RDONLY); + if (fd == -1) + { + grub_error (GRUB_ERR_BAD_DEVICE, + N_("cannot open `%s': %s"), os_dev, + strerror (errno)); + return xstrdup (os_dev); + } + if (ioctl (fd, DIOCGWEDGEINFO, &dkw) == -1) + { + grub_error (GRUB_ERR_BAD_DEVICE, + "cannot get disk wedge info of `%s'", os_dev); + close (fd); + return xstrdup (os_dev); + } + *is_part = (dkw.dkw_offset != 0); + close (fd); + return xasprintf ("/dev/r%s%c", dkw.dkw_parent, 'a' + rawpart); + } +#endif + + /* NetBSD (disk label) partitions are of the form "/dev/r[a-z]+[0-9][a-z]". */ + if (strncmp ("/dev/r", os_dev, sizeof("/dev/r") - 1) == 0 && + (os_dev[sizeof("/dev/r") - 1] >= 'a' && os_dev[sizeof("/dev/r") - 1] <= 'z') && + strncmp ("fd", os_dev + sizeof("/dev/r") - 1, sizeof("fd") - 1) != 0) /* not a floppy device name */ + { + char *path = xstrdup (os_dev); + char *p; + for (p = path + sizeof("/dev/r"); *p >= 'a' && *p <= 'z'; p++); + if (grub_isdigit(*p)) + { + p++; + if ((*p >= 'a' && *p <= 'z') && (*(p+1) == '\0')) + { + if (*p != 'a' + rawpart) + *is_part = 1; + /* path matches the required regular expression and + p points to its last character. */ + *p = 'a' + rawpart; + } + } + return path; + } + + return xstrdup (os_dev); +} + +enum grub_dev_abstraction_types +grub_util_get_dev_abstraction_os (const char *os_dev __attribute__((unused))) +{ + return GRUB_DEV_ABSTRACTION_NONE; +} + +int +grub_util_pull_device_os (const char *os_dev __attribute__ ((unused)), + enum grub_dev_abstraction_types ab __attribute__ ((unused))) +{ + return 0; +} + +char * +grub_util_get_grub_dev_os (const char *os_dev __attribute__ ((unused))) +{ + return NULL; +} + + +grub_disk_addr_t +grub_util_find_partition_start_os (const char *dev) +{ + int fd; +# if defined(__NetBSD__) + struct dkwedge_info dkw; +# endif /* defined(__NetBSD__) */ + struct disklabel label; + int p_index; + + fd = grub_util_fd_open (dev, O_RDONLY); + if (fd == -1) + { + grub_error (GRUB_ERR_BAD_DEVICE, N_("cannot open `%s': %s"), + dev, strerror (errno)); + return 0; + } + +# if defined(__NetBSD__) + /* First handle the case of disk wedges. */ + if (ioctl (fd, DIOCGWEDGEINFO, &dkw) == 0) + { + close (fd); + return (grub_disk_addr_t) dkw.dkw_offset; + } +# endif /* defined(__NetBSD__) */ + + if (ioctl (fd, DIOCGDINFO, &label) == -1) + { + grub_error (GRUB_ERR_BAD_DEVICE, + "cannot get disk label of `%s'", dev); + close (fd); + return 0; + } + + close (fd); + + if (dev[0]) + p_index = dev[strlen(dev) - 1] - 'a'; + else + p_index = -1; + + if (p_index >= label.d_npartitions || p_index < 0) + { + grub_error (GRUB_ERR_BAD_DEVICE, + "no disk label entry for `%s'", dev); + return 0; + } + return (grub_disk_addr_t) label.d_partitions[p_index].p_offset; +} |