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-rw-r--r--fedora/hardlink.c344
1 files changed, 0 insertions, 344 deletions
diff --git a/fedora/hardlink.c b/fedora/hardlink.c
deleted file mode 100644
index 62e633786d..0000000000
--- a/fedora/hardlink.c
+++ /dev/null
@@ -1,344 +0,0 @@
-/* Copyright (C) 2001 Red Hat, Inc.
-
- Written by Jakub Jelinek <jakub@redhat.com>.
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public
- License along with this program; see the file COPYING. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-/* Changes by Rémy Card to use constants and add option -n. */
-
-#define _GNU_SOURCE
-#include <sys/types.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <string.h>
-#include <dirent.h>
-#include <fcntl.h>
-
-#define NHASH 131072 /* Must be a power of 2! */
-#define NAMELEN 4096
-#define NBUF 64
-
-struct _f;
-typedef struct _h {
- struct _h *next;
- struct _f *chain;
- off_t size;
- time_t mtime;
-} h;
-
-typedef struct _d {
- struct _d *next;
- char name[0];
-} d;
-
-d *dirs;
-
-h *hps[NHASH];
-
-int no_link = 0;
-int verbose = 0;
-int content_only = 0;
-
-typedef struct _f {
- struct _f *next;
- ino_t ino;
- dev_t dev;
- unsigned int cksum;
- char name[0];
-} f;
-
-inline unsigned int hash(off_t size, time_t mtime)
-{
- return (size ^ mtime) & (NHASH - 1);
-}
-
-inline int stcmp(struct stat *st1, struct stat *st2, int content_only)
-{
- if (content_only)
- return st1->st_size != st2->st_size;
- return st1->st_mode != st2->st_mode || st1->st_uid != st2->st_uid ||
- st1->st_gid != st2->st_gid || st1->st_size != st2->st_size ||
- st1->st_mtime != st2->st_mtime;
-}
-
-long long ndirs, nobjects, nregfiles, nmmap, ncomp, nlinks, nsaved;
-
-void doexit(int i)
-{
- if (verbose) {
- fprintf(stderr, "\n\n");
- fprintf(stderr, "Directories %lld\n", ndirs);
- fprintf(stderr, "Objects %lld\n", nobjects);
- fprintf(stderr, "IFREG %lld\n", nregfiles);
- fprintf(stderr, "Mmaps %lld\n", nmmap);
- fprintf(stderr, "Comparisons %lld\n", ncomp);
- fprintf(stderr, "%s %lld\n", (no_link ? "Would link" : "Linked"), nlinks);
- fprintf(stderr, "%s %lld\n", (no_link ? "Would save" : "saved"), nsaved);
- }
- exit(i);
-}
-
-void usage(prog)
-{
- fprintf (stderr, "Usage: %s [-cnv] directories...\n", prog);
- exit(255);
-}
-
-unsigned int buf[NBUF];
-char nambuf1[NAMELEN], nambuf2[NAMELEN];
-
-void rf (char *name)
-{
- struct stat st, st2, st3;
- nobjects++;
- if (lstat (name, &st))
- return;
- if (S_ISDIR (st.st_mode)) {
- d * dp = malloc(sizeof(d) + 1 + strlen (name));
- if (!dp) {
- fprintf(stderr, "\nOut of memory 3\n");
- doexit(3);
- }
- strcpy (dp->name, name);
- dp->next = dirs;
- dirs = dp;
- } else if (S_ISREG (st.st_mode)) {
- int fd, i;
- f * fp, * fp2;
- h * hp;
- char *p, *q;
- char *n1, *n2;
- int cksumsize = sizeof(buf);
- unsigned int cksum;
- time_t mtime = content_only ? 0 : st.st_mtime;
- unsigned int hsh = hash (st.st_size, mtime);
- nregfiles++;
- if (verbose > 1)
- fprintf(stderr, " %s", name);
- fd = open (name, O_RDONLY);
- if (fd < 0) return;
- if (st.st_size < sizeof(buf)) {
- cksumsize = st.st_size;
- memset (((char *)buf) + cksumsize, 0, (sizeof(buf) - cksumsize) % sizeof(buf[0]));
- }
- if (read (fd, buf, cksumsize) != cksumsize) {
- close(fd);
- if (verbose > 1)
- fprintf(stderr, "\r%*s\r", (int)strlen(name)+2, "");
- return;
- }
- cksumsize = (cksumsize + sizeof(buf[0]) - 1) / sizeof(buf[0]);
- for (i = 0, cksum = 0; i < cksumsize; i++) {
- if (cksum + buf[i] < cksum)
- cksum += buf[i] + 1;
- else
- cksum += buf[i];
- }
- for (hp = hps[hsh]; hp; hp = hp->next)
- if (hp->size == st.st_size && hp->mtime == mtime)
- break;
- if (!hp) {
- hp = malloc(sizeof(h));
- if (!hp) {
- fprintf(stderr, "\nOut of memory 1\n");
- doexit(1);
- }
- hp->size = st.st_size;
- hp->mtime = mtime;
- hp->chain = NULL;
- hp->next = hps[hsh];
- hps[hsh] = hp;
- }
- for (fp = hp->chain; fp; fp = fp->next)
- if (fp->cksum == cksum)
- break;
- for (fp2 = fp; fp2 && fp2->cksum == cksum; fp2 = fp2->next)
- if (fp2->ino == st.st_ino && fp2->dev == st.st_dev) {
- close(fd);
- if (verbose > 1)
- fprintf(stderr, "\r%*s\r", (int)strlen(name)+2, "");
- return;
- }
- if (fp) {
- p = mmap (NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
- nmmap++;
- if (p == (void *)-1) {
- close(fd);
- fprintf(stderr, "\nFailed to mmap %s\n", name);
- return;
- }
- }
- for (fp2 = fp; fp2 && fp2->cksum == cksum; fp2 = fp2->next)
- if (!lstat (fp2->name, &st2) && S_ISREG (st2.st_mode) &&
- !stcmp (&st, &st2, content_only) &&
- st2.st_ino != st.st_ino &&
- st2.st_dev == st.st_dev) {
- int fd2 = open (fp2->name, O_RDONLY);
- if (fd2 < 0) continue;
- if (fstat (fd2, &st2) || !S_ISREG (st2.st_mode)) {
- close (fd2);
- continue;
- }
- ncomp++;
- q = mmap (NULL, st.st_size, PROT_READ, MAP_SHARED, fd2, 0);
- if (q == (void *)-1) {
- close(fd2);
- fprintf(stderr, "\nFailed to mmap %s\n", fp2->name);
- continue;
- }
- if (memcmp (p, q, st.st_size)) {
- munmap (q, st.st_size);
- close(fd2);
- continue;
- }
- munmap (q, st.st_size);
- close(fd2);
- if (lstat (name, &st3)) {
- fprintf(stderr, "\nCould not stat %s again\n", name);
- munmap (p, st.st_size);
- close(fd);
- return;
- }
- st3.st_atime = st.st_atime;
- if (stcmp (&st, &st3, 0)) {
- fprintf(stderr, "\nFile %s changed underneath us\n", name);
- munmap (p, st.st_size);
- close(fd);
- return;
- }
- n1 = fp2->name;
- n2 = name;
- if (!no_link) {
- strcpy (stpcpy (nambuf2, n2), ".$$$___cleanit___$$$");
- if (rename (n2, nambuf2)) {
- fprintf(stderr, "\nFailed to rename %s to %s\n", n2, nambuf2);
- continue;
- }
- if (link (n1, n2)) {
- fprintf(stderr, "\nFailed to hardlink %s to %s\n", n1, n2);
- if (rename (nambuf2, n2)) {
- fprintf(stderr, "\nBad bad - failed to rename back %s to %s\n", nambuf2, n2);
- }
- munmap (p, st.st_size);
- close(fd);
- return;
- }
- unlink (nambuf2);
- }
- nlinks++;
- if (st3.st_nlink > 1) {
- /* We actually did not save anything this time, since the link second argument
- had some other links as well. */
- if (verbose > 1)
- fprintf(stderr, "\r%*s\r%s %s to %s\n", (int)strlen(name)+2, "", (no_link ? "Would link" : "Linked"), n1, n2);
- } else {
- nsaved+=st.st_size;
- if (verbose > 1)
- fprintf(stderr, "\r%*s\r%s %s to %s, %s %ld\n", (int)strlen(name)+2, "", (no_link ? "Would link" : "Linked"), n1, n2, (no_link ? "would save" : "saved"), st.st_size);
- }
- munmap (p, st.st_size);
- close(fd);
- return;
- }
- if (fp)
- munmap (p, st.st_size);
- fp2 = malloc(sizeof(f) + 1 + strlen (name));
- if (!fp2) {
- fprintf(stderr, "\nOut of memory 2\n");
- doexit(2);
- }
- close(fd);
- fp2->ino = st.st_ino;
- fp2->dev = st.st_dev;
- fp2->cksum = cksum;
- strcpy(fp2->name, name);
- if (fp) {
- fp2->next = fp->next;
- fp->next = fp2;
- } else {
- fp2->next = hp->chain;
- hp->chain = fp2;
- }
- if (verbose > 1)
- fprintf(stderr, "\r%*s\r", (int)strlen(name)+2, "");
- return;
- }
-}
-
-int main(int argc, char **argv)
-{
- int ch;
- int i;
- char *p;
- d * dp;
- DIR *dh;
- struct dirent *di;
- while ((ch = getopt (argc, argv, "cnv")) != -1) {
- switch (ch) {
- case 'n':
- no_link++;
- break;
- case 'v':
- verbose++;
- break;
- case 'c':
- content_only++;
- break;
- default:
- usage(argv[0]);
- }
- }
- if (optind >= argc)
- usage(argv[0]);
- for (i = optind; i < argc; i++)
- rf(argv[i]);
- while (dirs) {
- dp = dirs;
- dirs = dp->next;
- strcpy (nambuf1, dp->name);
- free (dp);
- strcat (nambuf1, "/");
- p = strchr (nambuf1, 0);
- dh = opendir (nambuf1);
- if (dh == NULL)
- continue;
- ndirs++;
- while ((di = readdir (dh)) != NULL) {
- if (!di->d_name[0])
- continue;
- if (di->d_name[0] == '.') {
- char *q;
- if (!di->d_name[1] || !strcmp (di->d_name, "..") || !strncmp (di->d_name, ".in.", 4))
- continue;
- q = strrchr (di->d_name, '.');
- if (q && strlen (q) == 7 && q != di->d_name) {
- *p = 0;
- if (verbose)
- fprintf(stderr, "Skipping %s%s\n", nambuf1, di->d_name);
- continue;
- }
- }
- strcpy (p, di->d_name);
- rf(nambuf1);
- }
- closedir(dh);
- }
- doexit(0);
- return 0;
-}
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