#include <signal.h> /* SIG*, sigaction */
#include <getopt.h> /* getopt_long() */
#include <ctype.h> /* tolower() */
+#include <sys/ioctl.h>
+
+#if defined(HAVE_LINUX_FIEMAP_H) && defined(HAVE_SYS_VFS_H)
+# include <linux/fs.h>
+# include <linux/fiemap.h>
+# ifdef FICLONE
+# define USE_REFLINK 1
+# endif
+#endif
#include "nls.h"
#include "c.h"
#include "strutils.h"
#include "monotonic.h"
#include "optutils.h"
+#include "fileeq.h"
+
+#ifdef USE_REFLINK
+# include "statfs_magic.h"
+#endif
-#include <regex.h> /* regcomp(), regsearch() */
+#include <regex.h> /* regcomp(), regexec() */
-#ifdef HAVE_SYS_XATTR_H
-# include <sys/xattr.h> /* listxattr, getxattr */
+#if defined(HAVE_SYS_XATTR_H) && defined(HAVE_LLISTXATTR) && defined(HAVE_LGETXATTR)
+# include <sys/xattr.h>
+# define USE_XATTR 1
#endif
static int quiet; /* don't print anything */
+static int rootbasesz; /* size of the directory for nftw() */
+
+#ifdef USE_REFLINK
+enum {
+ REFLINK_NEVER = 0,
+ REFLINK_AUTO,
+ REFLINK_ALWAYS
+};
+static int reflink_mode = REFLINK_NEVER;
+static int reflinks_skip;
+#endif
+
+static struct ul_fileeq fileeq;
/**
* struct file - Information about a file
*/
struct file {
struct stat st;
+ struct ul_fileeq_data data;
+
struct file *next;
struct link {
struct link *next;
int basename;
+ int dirname;
#if __STDC_VERSION__ >= 199901L
char path[];
#elif __GNUC__
size_t linked;
size_t xattr_comparisons;
size_t comparisons;
+ size_t ignored_reflinks;
double saved;
struct timeval start_time;
} stats;
* @keep_oldest: Choose the file with oldest timestamp as master (default = FALSE)
* @dry_run: Specifies whether hardlink should not link files (default = FALSE)
* @min_size: Minimum size of files to consider. (default = 1 byte)
+ * @max_size: Maximum size of files to consider, 0 means umlimited. (default = 0 byte)
*/
static struct options {
struct hdl_regex *include;
struct hdl_regex *exclude;
+ const char *method;
signed int verbosity;
unsigned int respect_mode:1;
unsigned int respect_owner:1;
unsigned int respect_name:1;
+ unsigned int respect_dir:1;
unsigned int respect_time:1;
unsigned int respect_xattrs:1;
unsigned int maximise:1;
unsigned int keep_oldest:1;
unsigned int dry_run:1;
uintmax_t min_size;
+ uintmax_t max_size;
+ size_t io_size;
+ size_t cache_size;
} opts = {
/* default setting */
+#ifdef USE_FILEEQ_CRYPTOAPI
+ .method = "sha256",
+#else
+ .method = "memcmp",
+#endif
.respect_mode = TRUE,
.respect_owner = TRUE,
.respect_time = TRUE,
.respect_xattrs = FALSE,
.keep_oldest = FALSE,
- .min_size = 1
+ .min_size = 1,
+ .cache_size = 10*1024*1024
};
/*
* The last signal we received. We store the signal here in order to be able
* to break out of loops gracefully and to return from our nftw() handler.
*/
-static int last_signal;
+static volatile sig_atomic_t last_signal;
+
+
+#define is_log_enabled(_level) (quiet == 0 && (_level) <= (unsigned int)opts.verbosity)
/**
* jlog - Logging for hardlink
{
va_list args;
- if (quiet || level > (unsigned int)opts.verbosity)
+ if (!is_log_enabled(level))
return;
va_start(args, format);
return diff;
}
+/* Compare only filenames */
+static inline int filename_strcmp(const struct file *a, const struct file *b)
+{
+ return strcmp( a->links->path + a->links->basename,
+ b->links->path + b->links->basename);
+}
+
+/**
+ * Compare only directory names (ignores root directory and basename (filename))
+ *
+ * The complete path conrains three fragments:
+ *
+ * <rootdir> is specified on hardlink command line
+ * <dirname> is all betweehn rootdir and filename
+ * <filename> is last component (aka basename)
+ */
+static inline int dirname_strcmp(const struct file *a, const struct file *b)
+{
+ int diff = 0;
+ int asz = a->links->basename - a->links->dirname,
+ bsz = b->links->basename - b->links->dirname;
+
+ diff = CMP(asz, bsz);
+
+ if (diff == 0) {
+ const char *a_start, *b_start;
+
+ a_start = a->links->path + a->links->dirname;
+ b_start = b->links->path + b->links->dirname;
+
+ diff = strncmp(a_start, b_start, asz);
+ }
+ return diff;
+}
+
/**
* compare_nodes_ino - Node comparison function
* @_a: The first node (a #struct file)
* contain only links with the same basename to keep the rest simple.
*/
if (diff == 0 && opts.respect_name)
- diff = strcmp(a->links->path + a->links->basename,
- b->links->path + b->links->basename);
+ diff = filename_strcmp(a, b);
+ if (diff == 0 && opts.respect_dir)
+ diff = dirname_strcmp(a, b);
return diff;
}
gettime_monotonic(&end);
timersub(&end, &stats.start_time, &delta);
- jlog(JLOG_SUMMARY, "%-15s %s", _("Mode:"),
+ jlog(JLOG_SUMMARY, "%-25s %s", _("Mode:"),
opts.dry_run ? _("dry-run") : _("real"));
- jlog(JLOG_SUMMARY, "%-15s %zu", _("Files:"), stats.files);
- jlog(JLOG_SUMMARY, _("%-15s %zu files"), _("Linked:"), stats.linked);
+ jlog(JLOG_SUMMARY, "%-25s %s", _("Method:"), opts.method);
+ jlog(JLOG_SUMMARY, "%-25s %zu", _("Files:"), stats.files);
+ jlog(JLOG_SUMMARY, _("%-25s %zu files"), _("Linked:"), stats.linked);
-#ifdef HAVE_SYS_XATTR_H
- jlog(JLOG_SUMMARY, _("%-15s %zu xattrs"), _("Compared:"),
+#ifdef USE_XATTR
+ jlog(JLOG_SUMMARY, _("%-25s %zu xattrs"), _("Compared:"),
stats.xattr_comparisons);
#endif
- jlog(JLOG_SUMMARY, _("%-15s %zu files"), _("Compared:"),
+ jlog(JLOG_SUMMARY, _("%-25s %zu files"), _("Compared:"),
stats.comparisons);
-
+#ifdef USE_REFLINK
+ if (reflinks_skip)
+ jlog(JLOG_SUMMARY, _("%-25s %zu files"), _("Skipped reflinks:"),
+ stats.ignored_reflinks);
+#endif
ssz = size_to_human_string(SIZE_SUFFIX_3LETTER |
SIZE_SUFFIX_SPACE |
SIZE_DECIMAL_2DIGITS, stats.saved);
- jlog(JLOG_SUMMARY, "%-15s %s", _("Saved:"), ssz);
+ jlog(JLOG_SUMMARY, "%-25s %s", _("Saved:"), ssz);
free(ssz);
- jlog(JLOG_SUMMARY, _("%-15s %"PRId64".%06"PRId64" seconds"), _("Duration:"),
+ jlog(JLOG_SUMMARY, _("%-25s %"PRId64".%06"PRId64" seconds"), _("Duration:"),
(int64_t)delta.tv_sec, (int64_t)delta.tv_usec);
}
return FALSE;
}
-#ifdef HAVE_SYS_XATTR_H
+#ifdef USE_XATTR
/**
* llistxattr_or_die - Wrapper for llistxattr()
free(value_b);
return ret;
}
-#else /* !HAVE_SYS_XATTR_H */
+#else /* !USE_XATTR */
static int file_xattrs_equal(const struct file *a, const struct file *b)
{
return TRUE;
}
-#endif /* HAVE_SYS_XATTR_H */
-
-/**
- * file_contents_equal - Compare contents of two files for equality
- * @a: The first file
- * @b: The second file
- *
- * Compare the contents of the files for equality
- */
-static int file_contents_equal(const struct file *a, const struct file *b)
-{
- FILE *fa = NULL;
- FILE *fb = NULL;
- char buf_a[8192];
- char buf_b[8192];
- int cmp = 0; /* zero => equal */
- off_t off = 0; /* current offset */
-
- assert(a->links != NULL);
- assert(b->links != NULL);
-
- jlog(JLOG_VERBOSE1, _("Comparing %s to %s"), a->links->path,
- b->links->path);
-
- stats.comparisons++;
-
- if ((fa = fopen(a->links->path, "rb")) == NULL)
- goto err;
- if ((fb = fopen(b->links->path, "rb")) == NULL)
- goto err;
-
-#if defined(POSIX_FADV_SEQUENTIAL) && defined(HAVE_POSIX_FADVISE)
- ignore_result( posix_fadvise(fileno(fa), 0, 0, POSIX_FADV_SEQUENTIAL) );
- ignore_result( posix_fadvise(fileno(fb), 0, 0, POSIX_FADV_SEQUENTIAL) );
-#endif
-
- while (!handle_interrupt() && cmp == 0) {
- size_t ca;
- size_t cb;
-
- ca = fread(buf_a, 1, sizeof(buf_a), fa);
- if (ca < sizeof(buf_a) && ferror(fa))
- goto err;
-
- cb = fread(buf_b, 1, sizeof(buf_b), fb);
- if (cb < sizeof(buf_b) && ferror(fb))
- goto err;
-
- off += ca;
-
- if ((ca != cb || ca == 0)) {
- cmp = CMP(ca, cb);
- break;
- }
- cmp = memcmp(buf_a, buf_b, ca);
- }
- out:
- if (fa != NULL)
- fclose(fa);
- if (fb != NULL)
- fclose(fb);
- return !handle_interrupt() && cmp == 0;
- err:
- if (fa == NULL || fb == NULL)
- warn(_("cannot open %s"), fa ? b->links->path : a->links->path);
- else
- warn(_("cannot read %s"),
- ferror(fa) ? a->links->path : b->links->path);
- cmp = 1;
- goto out;
-}
+#endif /* USE_XATTR */
/**
* file_may_link_to - Check whether a file may replace another one
* @a: The first file
* @b: The second file
*
- * Check whether the two fies are considered equal and can be linked
- * together. If the two files are identical, the result will be FALSE,
- * as replacing a link with an identical one is stupid.
+ * Check whether the two files are considered equal attributes and can be
+ * linked. This function does not compare content od the files!
*/
static int file_may_link_to(const struct file *a, const struct file *b)
{
(!opts.respect_owner || a->st.st_uid == b->st.st_uid) &&
(!opts.respect_owner || a->st.st_gid == b->st.st_gid) &&
(!opts.respect_time || a->st.st_mtime == b->st.st_mtime) &&
- (!opts.respect_name
- || strcmp(a->links->path + a->links->basename,
- b->links->path + b->links->basename) == 0) &&
- (!opts.respect_xattrs || file_xattrs_equal(a, b)) &&
- file_contents_equal(a, b));
+ (!opts.respect_name || filename_strcmp(a, b) == 0) &&
+ (!opts.respect_dir || dirname_strcmp(a, b) == 0) &&
+ (!opts.respect_xattrs || file_xattrs_equal(a, b)));
}
/**
return res;
}
+#ifdef USE_REFLINK
+static inline int do_link(struct file *a, struct file *b,
+ const char *new_name, int reflink)
+{
+ if (reflink) {
+ int dest = -1, src = -1;
+
+ dest = open(new_name, O_CREAT|O_WRONLY|O_TRUNC, 0600);
+ if (dest < 0)
+ goto fallback;
+ if (fchmod(dest, b->st.st_mode) != 0)
+ goto fallback;
+ if (fchown(dest, b->st.st_uid, b->st.st_gid) != 0)
+ goto fallback;
+ src = open(a->links->path, O_RDONLY);
+ if (src < 0)
+ goto fallback;
+ if (ioctl(dest, FICLONE, src) != 0)
+ goto fallback;
+ close(dest);
+ close(src);
+ return 0;
+fallback:
+ if (dest >= 0) {
+ close(dest);
+ unlink(new_name);
+ }
+ if (src >= 0)
+ close(src);
+
+ if (reflink_mode == REFLINK_ALWAYS)
+ return -errno;
+ jlog(JLOG_VERBOSE2,_("Reflinking failed, fallback to hardlinking"));
+ }
+
+ return link(a->links->path, new_name);
+}
+#else
+static inline int do_link(struct file *a,
+ struct file *b __attribute__((__unused__)),
+ const char *new_name,
+ int reflink __attribute__((__unused__)))
+{
+ return link(a->links->path, new_name);
+}
+#endif /* USE_REFLINK */
+
/**
* file_link - Replace b with a link to a
* @a: The first file
* linked to a temporary name, and then renamed to the name of @b, making
* the replace atomic (@b will always exist).
*/
-static int file_link(struct file *a, struct file *b)
+static int file_link(struct file *a, struct file *b, int reflink)
{
- char *ssz;
file_link:
assert(a->links != NULL);
assert(b->links != NULL);
- ssz = size_to_human_string(SIZE_SUFFIX_3LETTER |
+ if (is_log_enabled(JLOG_INFO)) {
+ char *ssz = size_to_human_string(SIZE_SUFFIX_3LETTER |
SIZE_SUFFIX_SPACE |
SIZE_DECIMAL_2DIGITS, a->st.st_size);
- jlog(JLOG_INFO, _("%sLinking %s to %s (-%s)"),
- opts.dry_run ? _("[DryRun] ") : "", a->links->path, b->links->path,
- ssz);
- free(ssz);
+ jlog(JLOG_INFO, _("%s%sLinking %s to %s (-%s)"),
+ opts.dry_run ? _("[DryRun] ") : "",
+ reflink ? "Ref" : "",
+ a->links->path, b->links->path,
+ ssz);
+ free(ssz);
+ }
if (!opts.dry_run) {
- size_t len =
- strlen(b->links->path) + strlen(".hardlink-temporary") + 1;
- char *new_path = xmalloc(len);
+ char *new_path;
+ int failed = 1;
- snprintf(new_path, len, "%s.hardlink-temporary",
- b->links->path);
+ xasprintf(&new_path, "%s.hardlink-temporary", b->links->path);
+
+ if (do_link(a, b, new_path, reflink) != 0)
+ warn(_("cannot link %s to %s"), a->links->path, new_path);
+
+ else if (rename(new_path, b->links->path) != 0) {
+ warn(_("cannot rename %s to %s"), a->links->path, new_path);
+ unlink(new_path);
+ } else
+ failed = 0;
- if (link(a->links->path, new_path) != 0) {
- warn(_("cannot link %s to %s"), a->links->path,
- new_path);
- free(new_path);
- return FALSE;
- } else if (rename(new_path, b->links->path) != 0) {
- warn(_("cannot rename %s to %s"), a->links->path,
- new_path);
- unlink(new_path); /* cleanup failed rename */
- free(new_path);
- return FALSE;
- }
free(new_path);
+ if (failed)
+ return FALSE;
}
/* Update statistics */
return TRUE;
}
+static int has_fpath(struct file *node, const char *path)
+{
+ struct link *l;
+
+ for (l = node->links; l; l = l->next) {
+ if (strcmp(l->path, path) == 0)
+ return 1;
+ }
+
+ return 0;
+}
+
+
/**
* inserter - Callback function for nftw()
* @fpath: The path of the file being visited
return 0;
}
- jlog(JLOG_VERBOSE2, _("Visiting %s (file %zu)"), fpath, stats.files);
+ jlog(JLOG_VERBOSE2, " %5zu: [%" PRIu64 "/%" PRIu64 "/%zu] %s",
+ stats.files, sb->st_dev, sb->st_ino,
+ (size_t) sb->st_nlink, fpath);
+
+ if ((opts.max_size > 0) && ((uintmax_t) sb->st_size > opts.max_size)) {
+ jlog(JLOG_VERBOSE1,
+ _("Skipped %s (greater than configured size)"), fpath);
+ return 0;
+ }
pathlen = strlen(fpath) + 1;
fil->st = *sb;
fil->links->basename = ftwbuf->base;
+ fil->links->dirname = rootbasesz;
fil->links->next = NULL;
memcpy(fil->links->path, fpath, pathlen);
assert((*node)->st.st_dev == sb->st_dev);
assert((*node)->st.st_ino == sb->st_ino);
- fil->links->next = (*node)->links;
- (*node)->links = fil->links;
+ if (has_fpath(*node, fpath)) {
+ jlog(JLOG_VERBOSE1,
+ _("Skipped %s (specified more than once)"), fpath);
+ free(fil->links);
+ } else {
+ fil->links->next = (*node)->links;
+ (*node)->links = fil->links;
+ }
free(fil);
} else {
return 0;
}
+#ifdef USE_REFLINK
+static int is_reflink_compatible(dev_t devno, const char *filename)
+{
+ static dev_t last_dev = 0;
+ static int last_status = 0;
+
+ if (last_dev != devno) {
+ struct statfs vfs;
+
+ if (statfs(filename, &vfs) != 0)
+ return 0;
+
+ last_dev = devno;
+ switch (vfs.f_type) {
+ case STATFS_BTRFS_MAGIC:
+ case STATFS_XFS_MAGIC:
+ last_status = 1;
+ break;
+ default:
+ last_status = 0;
+ break;
+ }
+ }
+
+ return last_status;
+}
+
+static int is_reflink(struct file *xa, struct file *xb)
+{
+ int last = 0, rc = 0;
+ char abuf[BUFSIZ] = { 0 },
+ bbuf[BUFSIZ] = { 0 };
+
+ struct fiemap *amap = (struct fiemap *) abuf,
+ *bmap = (struct fiemap *) bbuf;
+
+ int af = open(xa->links->path, O_RDONLY),
+ bf = open(xb->links->path, O_RDONLY);
+
+ if (af < 0 || bf < 0)
+ goto done;
+
+ do {
+ size_t i;
+
+ amap->fm_length = ~0ULL;
+ amap->fm_flags = FIEMAP_FLAG_SYNC;
+ amap->fm_extent_count = (sizeof(abuf) - sizeof(*amap)) / sizeof(struct fiemap_extent);
+
+ bmap->fm_length = ~0ULL;
+ bmap->fm_flags = FIEMAP_FLAG_SYNC;
+ bmap->fm_extent_count = (sizeof(bbuf) - sizeof(*bmap)) / sizeof(struct fiemap_extent);
+
+ if (ioctl(af, FS_IOC_FIEMAP, (unsigned long) amap) < 0)
+ goto done;
+ if (ioctl(bf, FS_IOC_FIEMAP, (unsigned long) bmap) < 0)
+ goto done;
+
+ if (amap->fm_mapped_extents != bmap->fm_mapped_extents)
+ goto done;
+
+ for (i = 0; i < amap->fm_mapped_extents; i++) {
+ struct fiemap_extent *a = &amap->fm_extents[i];
+ struct fiemap_extent *b = &bmap->fm_extents[i];
+
+ if (a->fe_logical != b->fe_logical ||
+ a->fe_length != b->fe_length ||
+ a->fe_physical != b->fe_physical)
+ goto done;
+ if (!(a->fe_flags & FIEMAP_EXTENT_SHARED) ||
+ !(b->fe_flags & FIEMAP_EXTENT_SHARED))
+ goto done;
+ if (a->fe_flags & FIEMAP_EXTENT_LAST)
+ last = 1;
+ }
+
+ bmap->fm_start = amap->fm_start =
+ amap->fm_extents[amap->fm_mapped_extents - 1].fe_logical +
+ amap->fm_extents[amap->fm_mapped_extents - 1].fe_length;
+ } while (last == 0);
+
+ rc = 1;
+done:
+ if (af >= 0)
+ close(af);
+ if (bf >= 0)
+ close(bf);
+ return rc;
+}
+#endif /* USE_REFLINK */
+
+static inline size_t count_nodes(struct file *x)
+{
+ size_t ct = 0;
+
+ for ( ; x != NULL; x = x->next)
+ ct++;
+
+ return ct;
+}
+
/**
* visitor - Callback for twalk()
* @nodep: Pointer to a pointer to a #struct file
static void visitor(const void *nodep, const VISIT which, const int depth)
{
struct file *master = *(struct file **)nodep;
+ struct file *begin = master;
struct file *other;
(void)depth;
return;
for (; master != NULL; master = master->next) {
+ size_t nnodes, memsiz;
+ int may_reflink = 0;
+
if (handle_interrupt())
exit(EXIT_FAILURE);
if (master->links == NULL)
continue;
+ /* calculate per file max memory use */
+ nnodes = count_nodes(master);
+ if (!nnodes)
+ continue;
+
+ /* per-file cache size */
+ memsiz = opts.cache_size / nnodes;
+ /* filesiz, readsiz, memsiz */
+ ul_fileeq_set_size(&fileeq, master->st.st_size, opts.io_size, memsiz);
+
+#ifdef USE_REFLINK
+ if (reflink_mode || reflinks_skip) {
+ may_reflink =
+ reflink_mode == REFLINK_ALWAYS ? 1 :
+ is_reflink_compatible(master->st.st_dev,
+ master->links->path);
+ }
+#endif
for (other = master->next; other != NULL; other = other->next) {
+ int eq;
+
if (handle_interrupt())
exit(EXIT_FAILURE);
assert(other != other->next);
assert(other->st.st_size == master->st.st_size);
- if (other->links == NULL
- || !file_may_link_to(master, other))
+ if (!other->links)
continue;
- if (!file_link(master, other) && errno == EMLINK)
+ /* check file attributes, etc. */
+ if (!file_may_link_to(master, other)) {
+ jlog(JLOG_VERBOSE2,
+ _("Skipped (attributes mismatch) %s"), other->links->path);
+ continue;
+ }
+#ifdef USE_REFLINK
+ if (may_reflink && reflinks_skip && is_reflink(master, other)) {
+ jlog(JLOG_VERBOSE2,
+ _("Skipped (already reflink) %s"), other->links->path);
+ stats.ignored_reflinks++;
+ continue;
+ }
+#endif
+ /* initialize content comparison */
+ if (!ul_fileeq_data_associated(&master->data))
+ ul_fileeq_data_set_file(&master->data, master->links->path);
+ if (!ul_fileeq_data_associated(&other->data))
+ ul_fileeq_data_set_file(&other->data, other->links->path);
+
+ /* compare files */
+ eq = ul_fileeq(&fileeq, &master->data, &other->data);
+
+ /* reduce number of open files, keep only master open */
+ ul_fileeq_data_close_file(&other->data);
+
+ stats.comparisons++;
+
+ if (!eq) {
+ jlog(JLOG_VERBOSE2,
+ _("Skipped (content mismatch) %s"), other->links->path);
+ continue;
+ }
+
+ /* link files */
+ if (!file_link(master, other, may_reflink) && errno == EMLINK) {
+ ul_fileeq_data_deinit(&master->data);
master = other;
+ }
}
+
+ /* don't keep master data in memory */
+ ul_fileeq_data_deinit(&master->data);
+ }
+
+ /* final cleanup */
+ for (other = begin; other != NULL; other = other->next) {
+ if (ul_fileeq_data_associated(&other->data))
+ ul_fileeq_data_deinit(&other->data);
}
}
fputs(_("Consolidate duplicate files using hardlinks.\n"), out);
fputs(USAGE_OPTIONS, out);
- fputs(_(" -v, --verbose verbose output (repeat for more verbosity)\n"), out);
- fputs(_(" -q, --quiet quiet mode - don't print anything\n"), out);
- fputs(_(" -n, --dry-run don't actually link anything\n"), out);
+ fputs(_(" -c, --content compare only file contents, same as -pot\n"), out);
+ fputs(_(" -b, --io-size <size> I/O buffer size for file reading\n"
+ " (speedup, using more RAM)\n"), out);
+ fputs(_(" -d, --respect-dir directory names have to be identical\n"), out);
fputs(_(" -f, --respect-name filenames have to be identical\n"), out);
- fputs(_(" -p, --ignore-mode ignore changes of file mode\n"), out);
- fputs(_(" -o, --ignore-owner ignore owner changes\n"), out);
- fputs(_(" -t, --ignore-time ignore timestamps (when testing for equality)\n"), out);
-#ifdef HAVE_SYS_XATTR_H
- fputs(_(" -X, --respect-xattrs respect extended attributes\n"), out);
-#endif
+ fputs(_(" -i, --include <regex> regular expression to include files/dirs\n"), out);
fputs(_(" -m, --maximize maximize the hardlink count, remove the file with\n"
" lowest hardlink count\n"), out);
fputs(_(" -M, --minimize reverse the meaning of -m\n"), out);
+ fputs(_(" -n, --dry-run don't actually link anything\n"), out);
+ fputs(_(" -o, --ignore-owner ignore owner changes\n"), out);
fputs(_(" -O, --keep-oldest keep the oldest file of multiple equal files\n"
" (lower precedence than minimize/maximize)\n"), out);
- fputs(_(" -x, --exclude <regex> regular expression to exclude files\n"), out);
- fputs(_(" -i, --include <regex> regular expression to include files/dirs\n"), out);
+ fputs(_(" -p, --ignore-mode ignore changes of file mode\n"), out);
+ fputs(_(" -q, --quiet quiet mode - don't print anything\n"), out);
+ fputs(_(" -r, --cache-size <size> memory limit for cached file content data\n"), out);
fputs(_(" -s, --minimum-size <size> minimum size for files.\n"), out);
- fputs(_(" -c, --content compare only file contents, same as -pot\n"), out);
+ fputs(_(" -S, --maximum-size <size> maximum size for files.\n"), out);
+ fputs(_(" -t, --ignore-time ignore timestamps (when testing for equality)\n"), out);
+ fputs(_(" -v, --verbose verbose output (repeat for more verbosity)\n"), out);
+ fputs(_(" -x, --exclude <regex> regular expression to exclude files\n"), out);
+#ifdef USE_XATTR
+ fputs(_(" -X, --respect-xattrs respect extended attributes\n"), out);
+#endif
+ fputs(_(" -y, --method <name> file content comparison method\n"), out);
+#ifdef USE_REFLINK
+ fputs(_(" --reflink[=<when>] create clone/CoW copies (auto, always, never)\n"), out);
+ fputs(_(" --skip-reflinks skip already cloned files (enabled on --reflink)\n"), out);
+#endif
fputs(USAGE_SEPARATOR, out);
- printf(USAGE_HELP_OPTIONS(28));
- printf(USAGE_MAN_TAIL("hardlink(1)"));
+ fprintf(out, USAGE_HELP_OPTIONS(28));
+ fprintf(out, USAGE_MAN_TAIL("hardlink(1)"));
exit(EXIT_SUCCESS);
}
-
/**
* parse_options - Parse the command line options
* @argc: Number of options
*/
static int parse_options(int argc, char *argv[])
{
- static const char optstr[] = "VhvnfpotXcmMOx:i:s:q";
+ enum {
+ OPT_REFLINK = CHAR_MAX + 1,
+ OPT_SKIP_RELINKS
+ };
+ static const char optstr[] = "VhvndfpotXcmMOx:y:i:r:S:s:b:q";
static const struct option long_options[] = {
{"version", no_argument, NULL, 'V'},
{"help", no_argument, NULL, 'h'},
{"verbose", no_argument, NULL, 'v'},
{"dry-run", no_argument, NULL, 'n'},
{"respect-name", no_argument, NULL, 'f'},
+ {"respect-dir", no_argument, NULL, 'd'},
{"ignore-mode", no_argument, NULL, 'p'},
{"ignore-owner", no_argument, NULL, 'o'},
{"ignore-time", no_argument, NULL, 't'},
{"keep-oldest", no_argument, NULL, 'O'},
{"exclude", required_argument, NULL, 'x'},
{"include", required_argument, NULL, 'i'},
+ {"method", required_argument, NULL, 'y' },
{"minimum-size", required_argument, NULL, 's'},
+ {"maximum-size", required_argument, NULL, 'S'},
+#ifdef USE_REFLINK
+ {"reflink", optional_argument, NULL, OPT_REFLINK },
+ {"skip-reflinks", no_argument, NULL, OPT_SKIP_RELINKS },
+#endif
+ {"io-size", required_argument, NULL, 'b'},
{"content", no_argument, NULL, 'c'},
{"quiet", no_argument, NULL, 'q'},
+ {"cache-size", required_argument, NULL, 'r'},
{NULL, 0, NULL, 0}
};
static const ul_excl_t excl[] = {
{0}
};
int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
- int c;
+ int c, content_only = 0;
while ((c = getopt_long(argc, argv, optstr, long_options, NULL)) != -1) {
case 'f':
opts.respect_name = TRUE;
break;
+ case 'd':
+ opts.respect_dir = TRUE;
+ break;
case 'v':
opts.verbosity++;
break;
quiet = TRUE;
break;
case 'c':
- opts.respect_mode = FALSE;
- opts.respect_name = FALSE;
- opts.respect_owner = FALSE;
- opts.respect_time = FALSE;
- opts.respect_xattrs = FALSE;
+ content_only = 1;
break;
case 'n':
opts.dry_run = 1;
case 'x':
register_regex(&opts.exclude, optarg);
break;
+ case 'y':
+ opts.method = optarg;
+ break;
case 'i':
register_regex(&opts.include, optarg);
break;
case 's':
- opts.min_size = strtosize_or_err(optarg, _("failed to parse size"));
+ opts.min_size = strtosize_or_err(optarg, _("failed to parse minimum size"));
+ break;
+ case 'S':
+ opts.max_size = strtosize_or_err(optarg, _("failed to parse maximum size"));
+ break;
+ case 'r':
+ opts.cache_size = strtosize_or_err(optarg, _("failed to parse cache size"));
+ break;
+ case 'b':
+ opts.io_size = strtosize_or_err(optarg, _("failed to parse I/O size"));
+ break;
+#ifdef USE_REFLINK
+ case OPT_REFLINK:
+ reflink_mode = REFLINK_AUTO;
+ if (optarg) {
+ if (strcmp(optarg, "auto") == 0)
+ reflink_mode = REFLINK_AUTO;
+ else if (strcmp(optarg, "always") == 0)
+ reflink_mode = REFLINK_ALWAYS;
+ else if (strcmp(optarg, "never") == 0)
+ reflink_mode = REFLINK_NEVER;
+ else
+ errx(EXIT_FAILURE, _("unsupported reflink mode; %s"), optarg);
+ }
+ if (reflink_mode != REFLINK_NEVER)
+ reflinks_skip = 1;
break;
+ case OPT_SKIP_RELINKS:
+ reflinks_skip = 1;
+ break;
+#endif
case 'h':
usage();
case 'V':
- print_version(EXIT_SUCCESS);
+ {
+ static const char *features[] = {
+#ifdef USE_REFLINK
+ "reflink",
+#endif
+#ifdef USE_FILEEQ_CRYPTOAPI
+ "cryptoapi",
+#endif
+ NULL
+ };
+ print_version_with_features(EXIT_SUCCESS, features);
+ }
default:
- errtryhelp(EXIT_FAILURE);}
+ errtryhelp(EXIT_FAILURE);
+ }
}
+ if (content_only) {
+ opts.respect_mode = FALSE;
+ opts.respect_name = FALSE;
+ opts.respect_dir = FALSE;
+ opts.respect_owner = FALSE;
+ opts.respect_time = FALSE;
+ opts.respect_xattrs = FALSE;
+ }
return 0;
}
if (last_signal != SIGINT)
last_signal = i;
if (i == SIGINT)
- putchar('\n');
+ /* can't use stdio on signal handler */
+ ignore_result(write(STDOUT_FILENO, "\n", sizeof("\n")-1));
}
int main(int argc, char *argv[])
{
struct sigaction sa;
+ int rc;
sa.sa_handler = sighandler;
sa.sa_flags = SA_RESTART;
sigaction(SIGINT, &sa, NULL);
sigaction(SIGUSR1, &sa, NULL);
- /* Pretty print numeric output */
- setlocale(LC_NUMERIC, "");
+ /* Localize messages, number formatting, and anything else. */
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
if (atexit(to_be_called_atexit) != 0)
err(EXIT_FAILURE, _("cannot register exit handler"));
errx(EXIT_FAILURE, _("no directory or file specified"));
gettime_monotonic(&stats.start_time);
+
+ rc = ul_fileeq_init(&fileeq, opts.method);
+ if (rc != 0 && strcmp(opts.method, "memcmp") != 0) {
+ jlog(JLOG_INFO, _("cannot initialize %s method, use 'memcmp' fallback"), opts.method);
+ opts.method = "memcmp";
+ rc = ul_fileeq_init(&fileeq, opts.method);
+ }
+ if (rc < 0)
+ err(EXIT_FAILURE, _("failed to initialize files comparior"));
+
+ /* defautl I/O size */
+ if (!opts.io_size) {
+ if (strcmp(opts.method, "memcmp") == 0)
+ opts.io_size = 8*1024;
+ else
+ opts.io_size = 1024*1024;
+ }
+
stats.started = TRUE;
+ jlog(JLOG_VERBOSE2, _("Scanning [device/inode/links]:"));
for (; optind < argc; optind++) {
- if (nftw(argv[optind], inserter, 20, FTW_PHYS) == -1)
- warn(_("cannot process %s"), argv[optind]);
+ char *path = realpath(argv[optind], NULL);
+
+ if (!path) {
+ warn(_("cannot get realpath: %s"), argv[optind]);
+ continue;
+ }
+ if (opts.respect_dir)
+ rootbasesz = strlen(path);
+ if (nftw(path, inserter, 20, FTW_PHYS) == -1)
+ warn(_("cannot process %s"), path);
+ free(path);
+ rootbasesz = 0;
}
twalk(files, visitor);
+
+ ul_fileeq_deinit(&fileeq);
return 0;
}
projects / thirdparty / util-linux.git / blobdiff