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Read mke2fs.conf and e2fsck.conf from root_sysconfdir rather than harcoded /etc.
[tools/e2fsprogs.git] / misc / mke2fs.c
index d60d832..0004c01 100644 (file)
@@ -51,6 +51,7 @@ extern int optind;
 #include "e2p/e2p.h"
 #include "ext2fs/ext2fs.h"
 #include "util.h"
+#include "profile.h"
 #include "../version.h"
 #include "nls-enable.h"
 
@@ -85,6 +86,8 @@ char *mount_dir;
 char *journal_device;
 int sync_kludge;       /* Set using the MKE2FS_SYNC env. option */
 
+profile_t      profile;
+
 int sys_page_size = 4096;
 int linux_version_code = 0;
 
@@ -143,79 +146,6 @@ static int parse_version_number(const char *s)
        return ((((major * 256) + minor) * 256) + rev);
 }
 
-
-
-/*
- * This function sets the default parameters for a filesystem
- *
- * The type is specified by the user.  The size is the maximum size
- * (in megabytes) for which a set of parameters applies, with a size
- * of zero meaning that it is the default parameter for the type.
- * Note that order is important in the table below.
- */
-#define DEF_MAX_BLOCKSIZE -1
-static char default_str[] = "default";
-struct mke2fs_defaults {
-       const char      *type;
-       int             size;
-       int             blocksize;
-       int             inode_ratio;
-} settings[] = {
-       { default_str, 0, 4096, 8192 },
-       { default_str, 512, 1024, 4096 },
-       { default_str, 3, 1024, 8192 },
-       { "journal", 0, 4096, 8192 },
-       { "news", 0, 4096, 4096 },
-       { "largefile", 0, 4096, 1024 * 1024 },
-       { "largefile4", 0, 4096, 4096 * 1024 },
-       { 0, 0, 0, 0},
-};
-
-static void set_fs_defaults(const char *fs_type,
-                           struct ext2_super_block *super,
-                           int blocksize, int sector_size,
-                           int *inode_ratio)
-{
-       int     megs;
-       int     ratio = 0;
-       struct mke2fs_defaults *p;
-       int     use_bsize = 1024;
-
-       megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024;
-       if (inode_ratio)
-               ratio = *inode_ratio;
-       if (!fs_type)
-               fs_type = default_str;
-       for (p = settings; p->type; p++) {
-               if ((strcmp(p->type, fs_type) != 0) &&
-                   (strcmp(p->type, default_str) != 0))
-                       continue;
-               if ((p->size != 0) && (megs > p->size))
-                       continue;
-               if (ratio == 0)
-                       *inode_ratio = p->inode_ratio < blocksize ?
-                               blocksize : p->inode_ratio;
-               use_bsize = p->blocksize;
-       }
-       if (blocksize <= 0) {
-               if (use_bsize == DEF_MAX_BLOCKSIZE) {
-                       use_bsize = sys_page_size;
-                       if ((linux_version_code < (2*65536 + 6*256)) &&
-                           (use_bsize > 4096))
-                               use_bsize = 4096;
-               }
-               if (sector_size && use_bsize < sector_size)
-                       use_bsize = sector_size;
-               if ((blocksize < 0) && (use_bsize < (-blocksize)))
-                       use_bsize = -blocksize;
-               blocksize = use_bsize;
-               super->s_blocks_count /= blocksize / 1024;
-       }
-       super->s_log_frag_size = super->s_log_block_size =
-               int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
-}
-
-
 /*
  * Helper function for read_bb_file and test_disk
  */
@@ -258,7 +188,7 @@ static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
        errcode_t       retval;
        char            buf[1024];
 
-       sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
+       sprintf(buf, "badblocks -b %d -X %s%s%s %d", fs->blocksize,
                quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
                fs->device_name, fs->super->s_blocks_count);
        if (verbose)
@@ -473,6 +403,7 @@ static void write_inode_tables(ext2_filsys fs)
        dgrp_t          i;
        int             num;
        struct progress_struct progress;
+       int             lazy_flag = 0;
 
        if (quiet)
                memset(&progress, 0, sizeof(progress));
@@ -480,18 +411,25 @@ static void write_inode_tables(ext2_filsys fs)
                progress_init(&progress, _("Writing inode tables: "),
                              fs->group_desc_count);
 
+       if (EXT2_HAS_COMPAT_FEATURE(fs->super, 
+                                   EXT2_FEATURE_COMPAT_LAZY_BG))
+               lazy_flag = 1;
+
        for (i = 0; i < fs->group_desc_count; i++) {
                progress_update(&progress, i);
                
                blk = fs->group_desc[i].bg_inode_table;
                num = fs->inode_blocks_per_group;
 
-               retval = zero_blocks(fs, blk, num, 0, &blk, &num);
-               if (retval) {
-                       fprintf(stderr, _("\nCould not write %d blocks "
-                               "in inode table starting at %u: %s\n"),
-                               num, blk, error_message(retval));
-                       exit(1);
+               if (!(lazy_flag &&
+                     (fs->group_desc[i].bg_flags & EXT2_BG_INODE_UNINIT))) {
+                       retval = zero_blocks(fs, blk, num, 0, &blk, &num);
+                       if (retval) {
+                               fprintf(stderr, _("\nCould not write %d "
+                               "blocks in inode table starting at %u: %s\n"),
+                                       num, blk, error_message(retval));
+                               exit(1);
+                       }
                }
                if (sync_kludge) {
                        if (sync_kludge == 1)
@@ -504,6 +442,37 @@ static void write_inode_tables(ext2_filsys fs)
        progress_close(&progress);
 }
 
+static void setup_lazy_bg(ext2_filsys fs)
+{
+       dgrp_t i;
+       int blks;
+       struct ext2_super_block *sb = fs->super;
+       struct ext2_group_desc *bg = fs->group_desc;
+
+       if (EXT2_HAS_COMPAT_FEATURE(fs->super, 
+                                   EXT2_FEATURE_COMPAT_LAZY_BG)) {
+               for (i = 0; i < fs->group_desc_count; i++, bg++) {
+                       if ((i == 0) ||
+                           (i == fs->group_desc_count-1))
+                               continue;
+                       if (bg->bg_free_inodes_count ==
+                           sb->s_inodes_per_group) {
+                               bg->bg_free_inodes_count = 0;
+                               bg->bg_flags |= EXT2_BG_INODE_UNINIT;
+                               sb->s_free_inodes_count -= 
+                                       sb->s_inodes_per_group;
+                       }
+                       blks = ext2fs_super_and_bgd_loc(fs, i, 0, 0, 0, 0);
+                       if (bg->bg_free_blocks_count == blks) {
+                               bg->bg_free_blocks_count = 0;
+                               bg->bg_flags |= EXT2_BG_BLOCK_UNINIT;
+                               sb->s_free_blocks_count -= blks;
+                       }
+               }
+       }
+}
+
+
 static void create_root_dir(ext2_filsys fs)
 {
        errcode_t       retval;
@@ -884,7 +853,8 @@ static void parse_extended_opts(struct ext2_super_block *param,
 static __u32 ok_features[3] = {
        EXT3_FEATURE_COMPAT_HAS_JOURNAL |
                EXT2_FEATURE_COMPAT_RESIZE_INODE |
-               EXT2_FEATURE_COMPAT_DIR_INDEX,  /* Compat */
+               EXT2_FEATURE_COMPAT_DIR_INDEX |
+               EXT2_FEATURE_COMPAT_LAZY_BG,    /* Compat */
        EXT2_FEATURE_INCOMPAT_FILETYPE|         /* Incompat */
                EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
                EXT2_FEATURE_INCOMPAT_META_BG,
@@ -892,11 +862,33 @@ static __u32 ok_features[3] = {
 };
 
 
+static void syntax_err_report(const char *filename, long err, int line_num)
+{
+       fprintf(stderr, 
+               _("Syntax error in mke2fs config file (%s, line #%d)\n\t%s\n"),
+               filename, line_num, error_message(err));
+       exit(1);
+}
+
+static const char *config_fn[] = { ROOT_SYSCONFDIR "/mke2fs.conf", 0 };
+
+static void edit_feature(const char *str, __u32 *compat_array) 
+{
+       if (!str)
+               return;
+
+       if (e2p_edit_feature(str, compat_array, ok_features)) {
+               fprintf(stderr, _("Invalid filesystem option set: %s\n"), 
+                       str);
+               exit(1);
+       }
+}
+
 static void PRS(int argc, char *argv[])
 {
        int             b, c;
        int             size;
-       char *          tmp;
+       char            *tmp, *tmp2;
        int             blocksize = 0;
        int             inode_ratio = 0;
        int             inode_size = 0;
@@ -913,6 +905,9 @@ static void PRS(int argc, char *argv[])
        struct          utsname ut;
 #endif
        long            sysval;
+       int             s_opt = -1, r_opt = -1;
+       char            *fs_features = 0;
+       int             use_bsize;
 
        /* Update our PATH to include /sbin  */
        if (oldpath) {
@@ -941,17 +936,17 @@ static void PRS(int argc, char *argv[])
                sys_page_size = sysval;
 #endif /* _SC_PAGESIZE */
 #endif /* HAVE_SYSCONF */
+
+       if ((tmp = getenv("MKE2FS_CONFIG")) != NULL)
+               config_fn[0] = tmp;
+       profile_set_syntax_err_cb(syntax_err_report);
+       profile_init(config_fn, &profile);
        
        setbuf(stdout, NULL);
        setbuf(stderr, NULL);
        initialize_ext2_error_table();
        memset(&fs_param, 0, sizeof(struct ext2_super_block));
        fs_param.s_rev_level = 1;  /* Create revision 1 filesystems now */
-       fs_param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
-       fs_param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
-#if 0
-       fs_param.s_feature_compat |= EXT2_FEATURE_COMPAT_DIR_INDEX;
-#endif
 
 #ifdef __linux__
        if (uname(&ut)) {
@@ -959,12 +954,8 @@ static void PRS(int argc, char *argv[])
                exit(1);
        }
        linux_version_code = parse_version_number(ut.release);
-       if (linux_version_code && linux_version_code < (2*65536 + 2*256)) {
+       if (linux_version_code && linux_version_code < (2*65536 + 2*256))
                fs_param.s_rev_level = 0;
-               fs_param.s_feature_incompat = 0;
-               fs_param.s_feature_compat = 0;
-               fs_param.s_feature_ro_compat = 0;
-       }
 #endif
 
        if (argc && *argv) {
@@ -1043,8 +1034,6 @@ static void PRS(int argc, char *argv[])
                        parse_journal_opts(optarg);
                        break;
                case 'j':
-                       fs_param.s_feature_compat |=
-                               EXT3_FEATURE_COMPAT_HAS_JOURNAL;
                        if (!journal_size)
                                journal_size = -1;
                        break;
@@ -1076,25 +1065,16 @@ static void PRS(int argc, char *argv[])
                        quiet = 1;
                        break;
                case 'r':
-                       fs_param.s_rev_level = strtoul(optarg, &tmp, 0);
+                       r_opt = strtoul(optarg, &tmp, 0);
                        if (*tmp) {
                                com_err(program_name, 0,
                                        _("bad revision level - %s"), optarg);
                                exit(1);
                        }
-                       if (fs_param.s_rev_level == EXT2_GOOD_OLD_REV) {
-                               fs_param.s_feature_incompat = 0;
-                               fs_param.s_feature_compat = 0;
-                               fs_param.s_feature_ro_compat = 0;
-                       }
+                       fs_param.s_rev_level = r_opt;
                        break;
                case 's':       /* deprecated */
-                       if (atoi(optarg))
-                               fs_param.s_feature_ro_compat |=
-                                       EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
-                       else 
-                               fs_param.s_feature_ro_compat &=
-                                       ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
+                       s_opt = atoi(optarg);
                        break;
 #ifdef EXT2_DYNAMIC_REV
                case 'I':
@@ -1127,19 +1107,7 @@ static void PRS(int argc, char *argv[])
                        }
                        break;
                case 'O':
-                       if (!strcmp(optarg, "none")) {
-                               fs_param.s_feature_compat = 0;
-                               fs_param.s_feature_incompat = 0;
-                               fs_param.s_feature_ro_compat = 0;
-                               break;
-                       }
-                       if (e2p_edit_feature(optarg,
-                                           &fs_param.s_feature_compat,
-                                           ok_features)) {
-                               fprintf(stderr,
-                                       _("Invalid filesystem option set: %s\n"), optarg);
-                               exit(1);
-                       }
+                       fs_features = optarg;
                        break;
                case 'E':
                case 'R':
@@ -1220,12 +1188,6 @@ static void PRS(int argc, char *argv[])
                                  "(max %d), forced to continue\n"),
                        blocksize, sys_page_size);
        }
-       if ((blocksize > 4096) &&
-           (fs_param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
-               fprintf(stderr, _("\nWarning: some 2.4 kernels do not support "
-                       "blocksizes greater than 4096\n\tusing ext3.  "
-                       "Use -b 4096 if this is an issue for you.\n\n"));
-
        if (optind < argc) {
                fs_param.s_blocks_count = parse_num_blocks(argv[optind++], 
                                fs_param.s_log_block_size);
@@ -1238,19 +1200,6 @@ static void PRS(int argc, char *argv[])
        if (optind < argc)
                usage();
 
-       if (fs_param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
-               if (!fs_type)
-                       fs_type = "journal";
-               reserved_ratio = 0;
-               fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
-               fs_param.s_feature_compat = 0;
-               fs_param.s_feature_ro_compat = 0;
-       }
-       if (fs_param.s_rev_level == EXT2_GOOD_OLD_REV &&
-           (fs_param.s_feature_compat || fs_param.s_feature_ro_compat ||
-            fs_param.s_feature_incompat))
-               fs_param.s_rev_level = 1;  /* Create a revision 1 filesystem */
-
        if (!force)
                check_plausibility(device_name);
        check_mount(device_name, force, _("filesystem"));
@@ -1311,13 +1260,69 @@ static void PRS(int argc, char *argv[])
                proceed_question();
        }
 
-       /*
-        * If the user asked for HAS_JOURNAL, then make sure a journal
-        * gets created.
-        */
-       if ((fs_param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
-           !journal_size)
-               journal_size = -1;
+       if (!fs_type) {
+               int megs = fs_param.s_blocks_count * 
+                       (EXT2_BLOCK_SIZE(&fs_param) / 1024) / 1024;
+
+               if (megs <= 3)
+                       fs_type = "floppy";
+               else if (megs <= 512)
+                       fs_type = "small";
+               else
+                       fs_type = "default";
+       }
+
+       /* Figure out what features should be enabled */
+
+       if (r_opt == EXT2_GOOD_OLD_REV && fs_features) {
+               fprintf(stderr, _("Filesystem features not supported "
+                                 "with revision 0 filesystems\n"));
+               exit(1);
+       }
+
+       profile_get_string(profile, "defaults", "base_features", 0,
+                          "filetype,sparse_super", &tmp);
+       profile_get_string(profile, "fs_types", fs_type, "base_features",
+                          tmp, &tmp2);
+       edit_feature(tmp2, &fs_param.s_feature_compat);
+       free(tmp);
+       free(tmp2);
+
+       profile_get_string(profile, "defaults", "default_features", 0,
+                          "", &tmp);
+       profile_get_string(profile, "fs_types", fs_type, 
+                          "default_features", tmp, &tmp2);
+       edit_feature(fs_features ? fs_features : tmp2, 
+                    &fs_param.s_feature_compat);
+       free(tmp);
+       free(tmp2);
+
+       if (s_opt > 0)
+               fs_param.s_feature_ro_compat |=
+                       EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
+       else if (s_opt == 0)
+               fs_param.s_feature_ro_compat &=
+                       ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
+
+       if (journal_size != 0)
+               fs_param.s_feature_compat |= 
+                       EXT3_FEATURE_COMPAT_HAS_JOURNAL;
+
+       if (fs_param.s_feature_incompat & 
+           EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
+               if (!fs_type)
+                       fs_type = "journal";
+               reserved_ratio = 0;
+               fs_param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
+               fs_param.s_feature_compat = 0;
+               fs_param.s_feature_ro_compat = 0;
+       }
+       
+       if (fs_param.s_rev_level == EXT2_GOOD_OLD_REV) {
+               fs_param.s_feature_incompat = 0;
+               fs_param.s_feature_compat = 0;
+               fs_param.s_feature_ro_compat = 0;
+       }
 
        /* Set first meta blockgroup via an environment variable */
        /* (this is mostly for debugging purposes) */
@@ -1336,8 +1341,40 @@ static void PRS(int argc, char *argv[])
        if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
                sector_size = atoi(tmp);
        
-       set_fs_defaults(fs_type, &fs_param, blocksize, sector_size, 
-                       &inode_ratio);
+       if (blocksize <= 0) {
+               profile_get_integer(profile, "defaults", "blocksize", 0,
+                                   1024, &use_bsize);
+               profile_get_integer(profile, "fs_types", fs_type, 
+                                   "blocksize", use_bsize, &use_bsize);
+
+               if (use_bsize == -1) {
+                       use_bsize = sys_page_size;
+                       if ((linux_version_code < (2*65536 + 6*256)) &&
+                           (use_bsize > 4096))
+                               use_bsize = 4096;
+               }
+               if (sector_size && use_bsize < sector_size)
+                       use_bsize = sector_size;
+               if ((blocksize < 0) && (use_bsize < (-blocksize)))
+                       use_bsize = -blocksize;
+               blocksize = use_bsize;
+               fs_param.s_blocks_count /= blocksize / 1024;
+       }
+
+       if (inode_ratio == 0) {
+               profile_get_integer(profile, "defaults", "inode_ratio", 0,
+                                   8192, &inode_ratio);
+               profile_get_integer(profile, "fs_types", fs_type, 
+                                   "inode_ratio", inode_ratio, 
+                                   &inode_ratio);
+
+               if (inode_ratio < blocksize)
+                       inode_ratio = blocksize;
+       }
+
+       fs_param.s_log_frag_size = fs_param.s_log_block_size =
+               int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
+
        blocksize = EXT2_BLOCK_SIZE(&fs_param);
        
        if (extended_opts)
@@ -1370,6 +1407,12 @@ static void PRS(int argc, char *argv[])
              exit(1);
        }
 
+       if ((blocksize > 4096) &&
+           (fs_param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL))
+               fprintf(stderr, _("\nWarning: some 2.4 kernels do not support "
+                       "blocksizes greater than 4096\n\tusing ext3.  "
+                       "Use -b 4096 if this is an issue for you.\n\n"));
+
        if (inode_size) {
                if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
                    inode_size > EXT2_BLOCK_SIZE(&fs_param) ||
@@ -1554,6 +1597,7 @@ int main (int argc, char *argv[])
                                _("while zeroing block %u at end of filesystem"),
                                ret_blk);
                }
+               setup_lazy_bg(fs);
                write_inode_tables(fs);
                create_root_dir(fs);
                create_lost_and_found(fs);
@@ -1602,7 +1646,9 @@ int main (int argc, char *argv[])
                        printf(_("done\n"));
                ext2fs_close(jfs);
                free(journal_device);
-       } else if (journal_size) {
+       } else if ((journal_size) ||
+                  (fs_param.s_feature_compat & 
+                   EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
                journal_blocks = figure_journal_size(journal_size, fs);
 
                if (!journal_blocks) {