diff options
Diffstat (limited to 'mdk-stage1/mkinitrd_helper/mkinitrd_helper.c')
| -rw-r--r-- | mdk-stage1/mkinitrd_helper/mkinitrd_helper.c | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/mdk-stage1/mkinitrd_helper/mkinitrd_helper.c b/mdk-stage1/mkinitrd_helper/mkinitrd_helper.c deleted file mode 100644 index 67be7c340..000000000 --- a/mdk-stage1/mkinitrd_helper/mkinitrd_helper.c +++ /dev/null @@ -1,308 +0,0 @@ -/* - * Guillaume Cottenceau (gc@mandrakesoft.com) - * - * Copyright 2001 MandrakeSoft - * - * This software is covered by the GPL license. - * - * This software may be freely redistributed under the terms of the GNU - * public license. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * - * This little program replaces usual sash and insmod.static based script - * from mkinitrd (that insmod modules, plus possibly mount a partition and - * losetup a loopback-based / on the partition). - * - * - * On my machine: - * gzipped sash + insmod.static 502491 bytes - * gzipped <this-program> 14243 bytes - * - * There will be room for linux-2.4 and many modules, now. Cool. - * - */ - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <errno.h> -#include <sys/mount.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <unistd.h> -#include <sys/ioctl.h> -#include <signal.h> - -#include "insmod.h" - -int quiet = 0; - -void vlog_message(const char * s, va_list args) -{ - vprintf(s, args); - printf("\n"); -} - -void log_perror(char *msg) -{ - perror(msg); -} - - -static void fatal_error(char *msg) -{ - printf("[] E: %s\n[] giving hand to kernel.\n", msg); - exit(-1); -} - -static void warning(char *msg) -{ - printf("[] W: %s\n", msg); -} - -static void parse_parms(const char * parm, char ** parm1, char ** parm2, char ** parm3) -{ - char * ptr; - - ptr = strchr(parm, '\n'); - if (!ptr) - fatal_error("bad config file: no newline after parms"); - - *parm1 = malloc(ptr-parm+1); /* yup, never freed :-) */ - memcpy(*parm1, parm, ptr-parm); - (*parm1)[ptr-parm] = '\0'; - - if (!parm2) - return; - - *parm2 = strchr(*parm1, ' '); - if (!*parm2) - return; - **parm2 = '\0'; - (*parm2)++; - - if (!parm3) - return; - - *parm3 = strchr(*parm2, ' '); - if (!*parm3) - return; - **parm3 = '\0'; - (*parm3)++; -} - - -static void insmod_(const char * parm) -{ - char * mod_name, * options; - - parse_parms(parm, &mod_name, &options, NULL); - -#ifdef DEBUG - printf("insmod %s options %s\n", mod_name, options); -#endif - if (!quiet) - printf("[] Loading module %s\n", mod_name); - - if (insmod_call(mod_name, options)) - perror("insmod failed"); -} - - -static void mount_(const char * parm) -{ - char * dev, * location, * fs; - unsigned long flags; - char * opts = NULL; - - parse_parms(parm, &dev, &location, &fs); - -#ifdef DEBUG - printf("mounting %s on %s as type %s\n", dev, location, fs); -#endif - if (!quiet) - printf("[] Mounting device containing loopback root filesystem\n"); - - flags = MS_MGC_VAL; - - if (!strcmp(fs, "vfat")) - opts = "check=relaxed"; - - if (mount(dev, location, fs, flags, opts)) - perror("mount failed"); -} - - -#define LO_NAME_SIZE 64 -#define LO_KEY_SIZE 32 - -struct loop_info -{ - int lo_number; /* ioctl r/o */ - dev_t lo_device; /* ioctl r/o */ - unsigned long lo_inode; /* ioctl r/o */ - dev_t lo_rdevice; /* ioctl r/o */ - int lo_offset; - int lo_encrypt_type; - int lo_encrypt_key_size; /* ioctl w/o */ - int lo_flags; /* ioctl r/o */ - char lo_name[LO_NAME_SIZE]; - unsigned char lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */ - unsigned long lo_init[2]; - char reserved[4]; -}; - -#define LOOP_SET_FD 0x4C00 -#define LOOP_CLR_FD 0x4C01 -#define LOOP_SET_STATUS 0x4C02 - -static void set_loop_(const char * parm) -{ - struct loop_info loopinfo; - int fd, ffd; - char * device, * file; - - parse_parms(parm, &device, &file, NULL); - -#ifdef DEBUG - printf("set_looping %s with %s\n", device, file); -#endif - if (!quiet) - printf("[] Setting up loopback file %s\n", file); - - if ((ffd = open(file, O_RDWR)) < 0) { - perror("set_loop, opening file in rw"); - exit(-1); - } - - if ((fd = open(device, O_RDWR)) < 0) { - perror("set_loop, opening loop device in rw"); - close(ffd); - exit(-1); - } - - memset(&loopinfo, 0, sizeof (loopinfo)); - strncpy(loopinfo.lo_name, file, LO_NAME_SIZE); - loopinfo.lo_name[LO_NAME_SIZE - 1] = 0; - loopinfo.lo_offset = 0; - - if (ioctl(fd, LOOP_SET_FD, ffd) < 0) { - close(fd); - close(ffd); - perror("LOOP_SET_FD"); - exit(-1); - } - - if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) { - (void) ioctl (fd, LOOP_CLR_FD, 0); - close(fd); - close(ffd); - perror("LOOP_SET_STATUS"); - exit(-1); - } - - close(fd); - close(ffd); -} - - -#define MD_MAJOR 9 -#define RAID_AUTORUN _IO (MD_MAJOR, 0x14) -#include <linux/raid/md_u.h> - -static void raidautorun_(const char * parm) -{ - char * device; - int fd; - - parse_parms(parm, &device, NULL, NULL); - - if (!quiet) - printf("[] Calling raid autorun for %s\n", device); - - fd = open(device, O_RDWR, 0); - if (fd < 0) { - printf("raidautorun: failed to open %s: %d\n", device, errno); - return; - } - - if (ioctl(fd, RAID_AUTORUN, 0)) { - printf("raidautorun: RAID_AUTORUN failed: %d\n", errno); - } - - close(fd); -} - -static int handle_command(char ** ptr, char * cmd_name, void (*cmd_func)(const char * parm)) -{ - if (!strncmp(*ptr, cmd_name, strlen(cmd_name))) { - *ptr = strchr(*ptr, '\n'); - if (!*ptr) - fatal_error("Bad config file: no newline after command"); - (*ptr)++; - cmd_func(*ptr); - *ptr = strchr(*ptr, '\n'); - if (!*ptr) - exit(0); - (*ptr)++; - return 1; - } - return 0; -} - - -int main(int argc, char **argv) -{ - int fd_conf, i; - char buf[5000]; - char * ptr; - - if (strstr(argv[0], "modprobe")) - exit(0); - - if (mount("/proc", "/loopfs", "proc", 0, NULL)) - printf("[] couldn't mount proc filesystem\n"); - else { - int fd_cmdline = open("/loopfs/cmdline", O_RDONLY); - if (fd_cmdline > 0) { - i = read(fd_cmdline, buf, sizeof(buf)); - if (i == -1) - warning("could not read cmdline"); - else { - buf[i] = '\0'; - if (strstr(buf, "quiet")) - quiet = 1; - } - close(fd_cmdline); - } - umount("/loopfs"); - } - - if (!quiet) - printf("[] initrd_helper v" VERSION "\n"); - - if ((fd_conf = open("/mkinitrd_helper.conf", O_RDONLY)) < 0) - fatal_error("could not open mkinitrd_helper config file"); - - i = read(fd_conf, buf, sizeof(buf)); - if (i == -1) - fatal_error("could not read mkinitrd_helper config file"); - buf[i] = '\0'; - close(fd_conf); - - ptr = buf; - - while (*ptr) - if (!(handle_command(&ptr, "insmod", insmod_) + - handle_command(&ptr, "mount", mount_) + - handle_command(&ptr, "raidautorun", raidautorun_) + - handle_command(&ptr, "set_loop", set_loop_))) - warning("unkown command (trying to continue)"); - - return 0; -} |