d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
273 lines
6.9 KiB
C
273 lines
6.9 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* util.c --- helper functions used by tune2fs and mke2fs
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*
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* Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <linux/major.h>
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#include <sys/stat.h>
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#include "e2fsbb.h"
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#include "e2p/e2p.h"
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#include "ext2fs/ext2_fs.h"
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#include "ext2fs/ext2fs.h"
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#include "blkid/blkid.h"
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#include "util.h"
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void proceed_question(void)
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{
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fputs("Proceed anyway? (y,n) ", stdout);
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if (bb_ask_confirmation() == 0)
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exit(1);
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}
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void check_plausibility(const char *device, int force)
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{
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int val;
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#ifdef CONFIG_LFS
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struct stat64 s;
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val = stat64(device, &s);
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#else
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struct stat s;
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val = stat(device, &s);
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#endif
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if (force)
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return;
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if(val == -1)
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bb_perror_msg_and_die("Could not stat %s", device);
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if (!S_ISBLK(s.st_mode)) {
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printf("%s is not a block special device.\n", device);
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proceed_question();
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return;
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}
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#ifdef HAVE_LINUX_MAJOR_H
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#ifndef MAJOR
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#define MAJOR(dev) ((dev)>>8)
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#define MINOR(dev) ((dev) & 0xff)
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#endif
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#ifndef SCSI_BLK_MAJOR
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#ifdef SCSI_DISK0_MAJOR
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#ifdef SCSI_DISK8_MAJOR
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#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
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((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR) || \
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((M) >= SCSI_DISK8_MAJOR && (M) <= SCSI_DISK15_MAJOR))
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#else
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#define SCSI_DISK_MAJOR(M) ((M) == SCSI_DISK0_MAJOR || \
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((M) >= SCSI_DISK1_MAJOR && (M) <= SCSI_DISK7_MAJOR))
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#endif /* defined(SCSI_DISK8_MAJOR) */
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#define SCSI_BLK_MAJOR(M) (SCSI_DISK_MAJOR((M)) || (M) == SCSI_CDROM_MAJOR)
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#else
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#define SCSI_BLK_MAJOR(M) ((M) == SCSI_DISK_MAJOR || (M) == SCSI_CDROM_MAJOR)
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#endif /* defined(SCSI_DISK0_MAJOR) */
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#endif /* defined(SCSI_BLK_MAJOR) */
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if (((MAJOR(s.st_rdev) == HD_MAJOR &&
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MINOR(s.st_rdev)%64 == 0) ||
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(SCSI_BLK_MAJOR(MAJOR(s.st_rdev)) &&
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MINOR(s.st_rdev)%16 == 0))) {
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printf("%s is entire device, not just one partition!\n", device);
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proceed_question();
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}
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#endif
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}
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void check_mount(const char *device, int force, const char *type)
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{
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errcode_t retval;
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int mount_flags;
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retval = ext2fs_check_if_mounted(device, &mount_flags);
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if (retval) {
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bb_error_msg("Could not determine if %s is mounted", device);
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return;
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}
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if (mount_flags & EXT2_MF_MOUNTED) {
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bb_error_msg("%s is mounted !", device);
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force_check:
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if (force)
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bb_error_msg("badblocks forced anyways");
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else
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bb_error_msg_and_die("it's not safe to run badblocks!");
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}
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if (mount_flags & EXT2_MF_BUSY) {
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bb_error_msg("%s is apparently in use by the system", device);
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goto force_check;
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}
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}
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void parse_journal_opts(char **journal_device, int *journal_flags,
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int *journal_size, const char *opts)
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{
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char *buf, *token, *next, *p, *arg;
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int journal_usage = 0;
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buf = xstrdup(opts);
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for (token = buf; token && *token; token = next) {
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p = strchr(token, ',');
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next = 0;
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if (p) {
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*p = 0;
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next = p+1;
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}
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arg = strchr(token, '=');
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if (arg) {
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*arg = 0;
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arg++;
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}
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if (strcmp(token, "device") == 0) {
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*journal_device = blkid_get_devname(NULL, arg, NULL);
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if (!journal_device) {
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journal_usage++;
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continue;
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}
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} else if (strcmp(token, "size") == 0) {
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if (!arg) {
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journal_usage++;
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continue;
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}
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(*journal_size) = strtoul(arg, &p, 0);
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if (*p)
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journal_usage++;
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} else if (strcmp(token, "v1_superblock") == 0) {
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(*journal_flags) |= EXT2_MKJOURNAL_V1_SUPER;
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continue;
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} else
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journal_usage++;
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}
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if (journal_usage)
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bb_error_msg_and_die(
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"\nBad journal options specified.\n\n"
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"Journal options are separated by commas, "
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"and may take an argument which\n"
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"\tis set off by an equals ('=') sign.\n\n"
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"Valid journal options are:\n"
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"\tsize=<journal size in megabytes>\n"
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"\tdevice=<journal device>\n\n"
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"The journal size must be between "
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"1024 and 102400 filesystem blocks.\n\n");
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}
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/*
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* Determine the number of journal blocks to use, either via
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* user-specified # of megabytes, or via some intelligently selected
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* defaults.
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*
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* Find a reasonable journal file size (in blocks) given the number of blocks
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* in the filesystem. For very small filesystems, it is not reasonable to
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* have a journal that fills more than half of the filesystem.
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*/
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int figure_journal_size(int size, ext2_filsys fs)
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{
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blk_t j_blocks;
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if (fs->super->s_blocks_count < 2048) {
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bb_error_msg("Filesystem too small for a journal");
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return 0;
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}
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if (size >= 0) {
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j_blocks = size * 1024 / (fs->blocksize / 1024);
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if (j_blocks < 1024 || j_blocks > 102400)
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bb_error_msg_and_die("\nThe requested journal "
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"size is %d blocks;\n it must be "
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"between 1024 and 102400 blocks; Aborting",
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j_blocks);
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if (j_blocks > fs->super->s_free_blocks_count)
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bb_error_msg_and_die("Journal size too big for filesystem");
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return j_blocks;
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}
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if (fs->super->s_blocks_count < 32768)
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j_blocks = 1024;
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else if (fs->super->s_blocks_count < 256*1024)
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j_blocks = 4096;
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else if (fs->super->s_blocks_count < 512*1024)
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j_blocks = 8192;
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else if (fs->super->s_blocks_count < 1024*1024)
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j_blocks = 16384;
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else
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j_blocks = 32768;
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return j_blocks;
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}
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void print_check_message(ext2_filsys fs)
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{
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printf("This filesystem will be automatically "
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"checked every %d mounts or\n"
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"%g days, whichever comes first. "
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"Use tune2fs -c or -i to override.\n",
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fs->super->s_max_mnt_count,
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(double)fs->super->s_checkinterval / (3600 * 24));
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}
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void make_journal_device(char *journal_device, ext2_filsys fs, int quiet, int force)
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{
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errcode_t retval;
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ext2_filsys jfs;
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io_manager io_ptr;
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check_plausibility(journal_device, force);
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check_mount(journal_device, force, "journal");
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io_ptr = unix_io_manager;
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retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
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EXT2_FLAG_JOURNAL_DEV_OK, 0,
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fs->blocksize, io_ptr, &jfs);
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if (retval)
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bb_error_msg_and_die("Could not journal device %s", journal_device);
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if(!quiet)
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printf("Adding journal to device %s: ", journal_device);
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fflush(stdout);
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retval = ext2fs_add_journal_device(fs, jfs);
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if(retval)
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bb_error_msg_and_die("\nFailed to add journal to device %s", journal_device);
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if(!quiet)
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puts("done");
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ext2fs_close(jfs);
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}
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void make_journal_blocks(ext2_filsys fs, int journal_size, int journal_flags, int quiet)
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{
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unsigned long journal_blocks;
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errcode_t retval;
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journal_blocks = figure_journal_size(journal_size, fs);
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if (!journal_blocks) {
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fs->super->s_feature_compat &=
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~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
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return;
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}
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if(!quiet)
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printf("Creating journal (%ld blocks): ", journal_blocks);
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fflush(stdout);
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retval = ext2fs_add_journal_inode(fs, journal_blocks,
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journal_flags);
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if(retval)
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bb_error_msg_and_die("Could not create journal");
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if(!quiet)
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puts("done");
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}
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char *e2fs_set_sbin_path(void)
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{
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char *oldpath = getenv("PATH");
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/* Update our PATH to include /sbin */
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#define PATH_SET "/sbin"
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if (oldpath)
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oldpath = xasprintf("%s:%s", PATH_SET, oldpath);
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else
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oldpath = PATH_SET;
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putenv (oldpath);
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return oldpath;
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}
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