/* * 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; }