#define _GNU_SOURCE
#endif
+#include "config.h"
#include <ctype.h>
#include <dirent.h>
#include <endian.h>
#include <unistd.h>
#include <ext2fs/ext2_types.h>
#include <ext2fs/ext2fs.h>
-#include <linux/fs.h>
#include <sys/ioctl.h>
#include <ext2fs/fiemap.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/statfs.h>
-#include <sys/syscall.h>
#include <sys/vfs.h>
+#include "../version.h"
+
/* A relatively new ioctl interface ... */
#ifndef EXT4_IOC_MOVE_EXT
#define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent)
char msg_buffer[PATH_MAX + 1]; /* pathname of the file */
};
-typedef __u16 __le16;
-typedef __u32 __le32;
-typedef __u64 __le64;
-
-/*
- * Structure of the super block
- */
-struct ext4_super_block {
-/*00*/ __le32 s_inodes_count; /* Inodes count */
- __le32 s_blocks_count_lo; /* Blocks count */
- __le32 s_r_blocks_count_lo; /* Reserved blocks count */
- __le32 s_free_blocks_count_lo; /* Free blocks count */
-/*10*/ __le32 s_free_inodes_count; /* Free inodes count */
- __le32 s_first_data_block; /* First Data Block */
- __le32 s_log_block_size; /* Block size */
- __le32 s_obso_log_frag_size; /* Obsoleted fragment size */
-/*20*/ __le32 s_blocks_per_group; /* # Blocks per group */
- __le32 s_obso_frags_per_group; /* Obsoleted fragments per group */
- __le32 s_inodes_per_group; /* # Inodes per group */
- __le32 s_mtime; /* Mount time */
-/*30*/ __le32 s_wtime; /* Write time */
- __le16 s_mnt_count; /* Mount count */
- __le16 s_max_mnt_count; /* Maximal mount count */
- __le16 s_magic; /* Magic signature */
- __le16 s_state; /* File system state */
- __le16 s_errors; /* Behaviour when detecting errors */
- __le16 s_minor_rev_level; /* minor revision level */
-/*40*/ __le32 s_lastcheck; /* time of last check */
- __le32 s_checkinterval; /* max. time between checks */
- __le32 s_creator_os; /* OS */
- __le32 s_rev_level; /* Revision level */
-/*50*/ __le16 s_def_resuid; /* Default uid for reserved blocks */
- __le16 s_def_resgid; /* Default gid for reserved blocks */
- /*
- * These fields are for EXT4_DYNAMIC_REV superblocks only.
- *
- * Note: the difference between the compatible feature set and
- * the incompatible feature set is that if there is a bit set
- * in the incompatible feature set that the kernel doesn't
- * know about, it should refuse to mount the filesystem.
- *
- * e2fsck's requirements are more strict; if it doesn't know
- * about a feature in either the compatible or incompatible
- * feature set, it must abort and not try to meddle with
- * things it doesn't understand...
- */
- __le32 s_first_ino; /* First non-reserved inode */
- __le16 s_inode_size; /* size of inode structure */
- __le16 s_block_group_nr; /* block group # of this superblock */
- __le32 s_feature_compat; /* compatible feature set */
-/*60*/ __le32 s_feature_incompat; /* incompatible feature set */
- __le32 s_feature_ro_compat; /* readonly-compatible feature set */
-/*68*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */
-/*78*/ char s_volume_name[16]; /* volume name */
-/*88*/ char s_last_mounted[64]; /* directory where last mounted */
-/*C8*/ __le32 s_algorithm_usage_bitmap; /* For compression */
- /*
- * Performance hints. Directory preallocation should only
- * happen if the EXT4_FEATURE_COMPAT_DIR_PREALLOC flag is on.
- */
- __u8 s_prealloc_blocks; /* Nr of blocks to try to preallocate*/
- __u8 s_prealloc_dir_blocks; /* Nr to preallocate for dirs */
- __le16 s_reserved_gdt_blocks; /* Per group desc for online growth */
- /*
- * Journaling support valid if EXT4_FEATURE_COMPAT_HAS_JOURNAL set.
- */
-/*D0*/ __u8 s_journal_uuid[16]; /* uuid of journal superblock */
-/*E0*/ __le32 s_journal_inum; /* inode number of journal file */
- __le32 s_journal_dev; /* device number of journal file */
- __le32 s_last_orphan; /* start of list of inodes to delete */
- __le32 s_hash_seed[4]; /* HTREE hash seed */
- __u8 s_def_hash_version; /* Default hash version to use */
- __u8 s_reserved_char_pad;
- __le16 s_desc_size; /* size of group descriptor */
-/*100*/ __le32 s_default_mount_opts;
- __le32 s_first_meta_bg; /* First metablock block group */
- __le32 s_mkfs_time; /* When the filesystem was created */
- __le32 s_jnl_blocks[17]; /* Backup of the journal inode */
- /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */
-/*150*/ __le32 s_blocks_count_hi; /* Blocks count */
- __le32 s_r_blocks_count_hi; /* Reserved blocks count */
- __le32 s_free_blocks_count_hi; /* Free blocks count */
- __le16 s_min_extra_isize; /* All inodes have at least # bytes */
- __le16 s_want_extra_isize; /* New inodes should reserve # bytes */
- __le32 s_flags; /* Miscellaneous flags */
- __le16 s_raid_stride; /* RAID stride */
- __le16 s_mmp_interval; /* # seconds to wait in MMP checking */
- __le64 s_mmp_block; /* Block for multi-mount protection */
- __le32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/
- __u8 s_log_groups_per_flex; /* FLEX_BG group size */
- __u8 s_reserved_char_pad2;
- __le16 s_reserved_pad;
- __u32 s_reserved[162]; /* Padding to the end of the block */
-};
-
-char lost_found_dir[PATH_MAX + 1];
-int block_size;
-int extents_before_defrag;
-int extents_after_defrag;
-int mode_flag;
-unsigned int current_uid;
-unsigned int defraged_file_count;
-unsigned int frag_files_before_defrag;
-unsigned int frag_files_after_defrag;
-unsigned int regular_count;
-unsigned int succeed_cnt;
-unsigned int total_count;
-__u8 log_groups_per_flex;
-__le32 blocks_per_group;
-__le32 feature_incompat;
-ext4_fsblk_t files_block_count;
-struct frag_statistic_ino frag_rank[SHOW_FRAG_FILES];
-
-
-/* Local definitions of some syscalls glibc may not yet have */
-
-#ifndef HAVE_POSIX_FADVISE
-#warning Using locally defined posix_fadvise interface.
-
-#ifndef __NR_fadvise64_64
-#error Your kernel headers dont define __NR_fadvise64_64
-#endif
-
-/*
- * fadvise() - Give advice about file access.
- *
- * @fd: defrag target file's descriptor.
- * @offset: file offset.
- * @len: area length.
- * @advise: process flag.
- */
-static int posix_fadvise(int fd, loff_t offset, size_t len, int advise)
-{
- return syscall(__NR_fadvise64_64, fd, offset, len, advise);
-}
-#endif /* ! HAVE_FADVISE64_64 */
-
-#ifndef HAVE_SYNC_FILE_RANGE
-#warning Using locally defined sync_file_range interface.
+static char lost_found_dir[PATH_MAX + 1];
+static int block_size;
+static int extents_before_defrag;
+static int extents_after_defrag;
+static int mode_flag;
+static unsigned int current_uid;
+static unsigned int defraged_file_count;
+static unsigned int frag_files_before_defrag;
+static unsigned int frag_files_after_defrag;
+static unsigned int regular_count;
+static unsigned int succeed_cnt;
+static unsigned int total_count;
+static __u8 log_groups_per_flex;
+static __u32 blocks_per_group;
+static __u32 feature_incompat;
+static ext4_fsblk_t files_block_count;
+static struct frag_statistic_ino frag_rank[SHOW_FRAG_FILES];
-#ifndef __NR_sync_file_range
-#ifndef __NR_sync_file_range2 /* ppc */
-#error Your kernel headers dont define __NR_sync_file_range
-#endif
-#endif
/*
- * sync_file_range() - Sync file region.
- *
- * @fd: defrag target file's descriptor.
- * @offset: file offset.
- * @length: area length.
- * @flag: process flag.
+ * We prefer posix_fadvise64 when available, as it allows 64bit offset on
+ * 32bit systems
*/
-int sync_file_range(int fd, loff_t offset, loff_t length, unsigned int flag)
-{
-#ifdef __NR_sync_file_range
- return syscall(__NR_sync_file_range, fd, offset, length, flag);
-#else
- return syscall(__NR_sync_file_range2, fd, flag, offset, length);
+#if defined(HAVE_POSIX_FADVISE64)
+#define posix_fadvise posix_fadvise64
+#elif defined(HAVE_FADVISE64)
+#define posix_fadvise fadvise64
+#elif !defined(HAVE_POSIX_FADVISE)
+#error posix_fadvise not available!
#endif
-}
-#endif /* ! HAVE_SYNC_FILE_RANGE */
#ifndef HAVE_FALLOCATE64
-#warning Using locally defined fallocate syscall interface.
-
-#ifndef __NR_fallocate
-#error Your kernel headers dont define __NR_fallocate
-#endif
-
-/*
- * fallocate64() - Manipulate file space.
- *
- * @fd: defrag target file's descriptor.
- * @mode: process flag.
- * @offset: file offset.
- * @len: file size.
- */
-static int fallocate64(int fd, int mode, loff_t offset, loff_t len)
-{
- return syscall(__NR_fallocate, fd, mode, offset, len);
-}
-#endif /* ! HAVE_FALLOCATE */
+#error fallocate64 not available!
+#endif /* ! HAVE_FALLOCATE64 */
/*
* get_mount_point() - Get device's mount point.
{
/* Refer to /etc/mtab */
const char *mtab = MOUNTED;
- FILE *fp = NULL;
+ FILE *fp = NULL;
struct mntent *mnt = NULL;
+ struct stat64 sb;
+
+ if (stat64(devname, &sb) < 0) {
+ perror(NGMSG_FILE_INFO);
+ PRINT_FILE_NAME(devname);
+ return -1;
+ }
fp = setmntent(mtab, "r");
if (fp == NULL) {
}
while ((mnt = getmntent(fp)) != NULL) {
- if (strcmp(devname, mnt->mnt_fsname) != 0)
+ struct stat64 ms;
+
+ /*
+ * To handle device symlinks, we see if the
+ * device number matches, not the name
+ */
+ if (stat64(mnt->mnt_fsname, &ms) < 0)
+ continue;
+ if (sb.st_rdev != ms.st_rdev)
continue;
endmntent(fp);
*
* @file: the file's name.
*/
-static int is_ext4(const char *file)
+static int is_ext4(const char *file, char *devname)
{
int maxlen = 0;
int len, ret;
memset(mnt_type, 0, strlen(mnt->mnt_type) + 1);
strncpy(mnt_type, mnt->mnt_type, strlen(mnt->mnt_type));
strncpy(lost_found_dir, mnt->mnt_dir, PATH_MAX);
+ strncpy(devname, mnt->mnt_fsname, strlen(mnt->mnt_fsname) + 1);
}
endmntent(fp);
- if (strcmp(mnt_type, FS_EXT4) == 0) {
+ if (mnt_type && strcmp(mnt_type, FS_EXT4) == 0) {
FREE(mnt_type);
return 0;
} else {
static int page_in_core(int fd, struct move_extent defrag_data,
unsigned char **vec, unsigned int *page_num)
{
- long pagesize = sysconf(_SC_PAGESIZE);
+ long pagesize;
void *page = NULL;
loff_t offset, end_offset, length;
if (vec == NULL || *vec != NULL)
return -1;
+ pagesize = sysconf(_SC_PAGESIZE);
+ if (pagesize < 0)
+ return -1;
/* In mmap, offset should be a multiple of the page size */
offset = (loff_t)defrag_data.orig_start * block_size;
length = (loff_t)defrag_data.len * block_size;
*page_num = 0;
*page_num = (length + pagesize - 1) / pagesize;
*vec = (unsigned char *)calloc(*page_num, 1);
- if (*vec == NULL)
+ if (*vec == NULL) {
+ munmap(page, length);
return -1;
+ }
/* Get information on whether pages are in core */
if (mincore(page, (size_t)length, *vec) == -1 ||
unsigned int i;
loff_t offset;
+ if (pagesize < 1)
+ return -1;
+
offset = (loff_t)defrag_data.orig_start * block_size;
offset = (offset / pagesize) * pagesize;
+#ifdef HAVE_SYNC_FILE_RANGE
/* Sync file for fadvise process */
if (sync_file_range(fd, offset,
(loff_t)pagesize * page_num, sync_flag) < 0)
return -1;
+#endif
/* Try to release buffer cache which this process used,
* then other process can use the released buffer
fiemap_buf->fm_start = pos;
memset(ext_buf, 0, ext_buf_size);
ret = ioctl(fd, FS_IOC_FIEMAP, fiemap_buf);
- if (ret < 0)
+ if (ret < 0 || fiemap_buf->fm_mapped_extents == 0)
goto out;
for (i = 0; i < fiemap_buf->fm_mapped_extents; i++) {
ext_list = NULL;
do {
if ((ext_list_tmp->data.physical + ext_list_tmp->data.len)
- != ext_list_tmp->next->data.physical) {
+ != ext_list_tmp->next->data.physical ||
+ (ext_list_tmp->data.logical + ext_list_tmp->data.len)
+ != ext_list_tmp->next->data.logical) {
/* This extent and next extent are not continuous. */
ret++;
}
free(ext_group_head);
}
-/*
- * get_superblock_info() - Get superblock info by the file name.
- *
- * @file: the file's name.
- * @sb: the pointer of the struct ext4_super_block.
- */
-static int get_superblock_info(const char *file, struct ext4_super_block *sb)
-{
- /* Refer to /etc/mtab */
- const char *mtab = MOUNTED;
- FILE *fp = NULL;
-
- int fd = -1;
- int ret;
- size_t maxlen = 0;
- size_t len;
- char dev_name[PATH_MAX + 1];
- struct mntent *mnt = NULL;
-
- fp = setmntent(mtab, "r");
- if (fp == NULL)
- return -1;
-
- while ((mnt = getmntent(fp)) != NULL) {
- len = strlen(mnt->mnt_dir);
- ret = memcmp(file, mnt->mnt_dir, len);
- if (ret != 0)
- continue;
-
- if (len < maxlen)
- continue;
-
- maxlen = len;
-
- memset(dev_name, 0, PATH_MAX + 1);
- strncpy(dev_name, mnt->mnt_fsname,
- strnlen(mnt->mnt_fsname, PATH_MAX));
- }
-
- fd = open64(dev_name, O_RDONLY);
- if (fd < 0) {
- ret = -1;
- goto out;
- }
-
- /* Set offset to read superblock */
- ret = lseek64(fd, SUPERBLOCK_OFFSET, SEEK_SET);
- if (ret < 0)
- goto out;
-
- ret = read(fd, sb, sizeof(struct ext4_super_block));
- if (ret < 0)
- goto out;
-
-out:
- if (fd != -1)
- close(fd);
- endmntent(fp);
- return ret;
-}
-
/*
* get_best_count() - Get the file best extents count.
*
int ret;
unsigned int flex_bg_num;
- /* Calcuate best extents count */
+ /* Calculate best extents count */
if (feature_incompat & EXT4_FEATURE_INCOMPAT_FLEX_BG) {
flex_bg_num = 1 << log_groups_per_flex;
ret = ((block_count - 1) /
goto out;
}
- /* Calcuate donor inode's continuous physical region */
+ /* Calculate donor inode's continuous physical region */
donor_physical_cnt = get_physical_count(donor_list_physical);
/* Change donor extent list from physical to logical */
int main(int argc, char *argv[])
{
int opt;
- int i, j;
+ int i, j, ret = 0;
int flags = FTW_PHYS | FTW_MOUNT;
int arg_type = -1;
+ int mount_dir_len = 0;
int success_flag = 0;
char dir_name[PATH_MAX + 1];
+ char dev_name[PATH_MAX + 1];
struct stat64 buf;
- struct ext4_super_block sb;
+ ext2_filsys fs = NULL;
+
+ printf("e4defrag %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
/* Parse arguments */
if (argc == 1)
log_groups_per_flex = 0;
memset(dir_name, 0, PATH_MAX + 1);
+ memset(dev_name, 0, PATH_MAX + 1);
memset(lost_found_dir, 0, PATH_MAX + 1);
memset(frag_rank, 0,
sizeof(struct frag_statistic_ino) * SHOW_FRAG_FILES);
continue;
}
+ /* Handle i.e. lvm device symlinks */
+ if (S_ISLNK(buf.st_mode)) {
+ struct stat64 buf2;
+
+ if (stat64(argv[i], &buf2) == 0 &&
+ S_ISBLK(buf2.st_mode))
+ buf = buf2;
+ }
+
if (S_ISBLK(buf.st_mode)) {
/* Block device */
+ strncpy(dev_name, argv[i], strnlen(argv[i], PATH_MAX));
if (get_mount_point(argv[i], dir_name, PATH_MAX) < 0)
continue;
if (lstat64(dir_name, &buf) < 0) {
* filesystem type checked in get_mount_point()
*/
if (arg_type == FILENAME || arg_type == DIRNAME) {
- if (is_ext4(argv[i]) < 0)
+ if (is_ext4(argv[i], dev_name) < 0)
continue;
if (realpath(argv[i], dir_name) == NULL) {
perror("Couldn't get full path");
if (current_uid == ROOT_UID) {
/* Get super block info */
- memset(&sb, 0, sizeof(struct ext4_super_block));
- if (get_superblock_info(dir_name, &sb) < 0) {
- if (mode_flag & DETAIL) {
- perror("Can't get super block info");
- PRINT_FILE_NAME(argv[i]);
- }
+ ret = ext2fs_open(dev_name, EXT2_FLAG_64BITS, 0,
+ block_size, unix_io_manager, &fs);
+ if (ret) {
+ if (mode_flag & DETAIL)
+ com_err(argv[1], ret,
+ "while trying to open file system: %s",
+ dev_name);
continue;
}
- blocks_per_group = ext2fs_swab32(sb.s_blocks_per_group);
- feature_incompat = ext2fs_swab32(sb.s_feature_incompat);
- log_groups_per_flex = sb.s_log_groups_per_flex;
+ blocks_per_group = fs->super->s_blocks_per_group;
+ feature_incompat = fs->super->s_feature_incompat;
+ log_groups_per_flex = fs->super->s_log_groups_per_flex;
+
+ ext2fs_close_free(&fs);
}
switch (arg_type) {
+
case DIRNAME:
if (!(mode_flag & STATISTIC))
printf("ext4 defragmentation "
"for directory(%s)\n", argv[i]);
- int mount_dir_len = 0;
mount_dir_len = strnlen(lost_found_dir, PATH_MAX);
strncat(lost_found_dir, "/lost+found",
PATH_MAX - strnlen(lost_found_dir, PATH_MAX));
- /* Not the case("e4defrag mount_piont_dir") */
+ /* Not the case("e4defrag mount_point_dir") */
if (dir_name[mount_dir_len] != '\0') {
/*
- * "e4defrag mount_piont_dir/lost+found"
- * or "e4defrag mount_piont_dir/lost+found/"
+ * "e4defrag mount_point_dir/lost+found"
+ * or "e4defrag mount_point_dir/lost+found/"
*/
if (strncmp(lost_found_dir, dir_name,
strnlen(lost_found_dir,
continue;
}
- /* "e4defrag mount_piont_dir/else_dir" */
+ /* "e4defrag mount_point_dir/else_dir" */
memset(lost_found_dir, 0, PATH_MAX + 1);
}
+ /* fall through */
case DEVNAME:
if (arg_type == DEVNAME) {
strncpy(lost_found_dir, dir_name,
projects / thirdparty / e2fsprogs.git / blobdiff