/*
Copyright (C) Andrew Tridgell 1996
Copyright (C) Paul Mackerras 1996
+ Copyright (C) 2002 by Martin Pool <mbp@samba.org>
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
#include "rsync.h"
-extern int am_server;
extern int dry_run;
+extern int verbose;
#if SUPPORT_HARD_LINKS
-static int hlink_compare(struct file_struct *f1,struct file_struct *f2)
+static int hlink_compare(struct file_struct *f1, struct file_struct *f2)
{
- if (!S_ISREG(f1->mode) && !S_ISREG(f2->mode)) return 0;
- if (!S_ISREG(f1->mode)) return -1;
- if (!S_ISREG(f2->mode)) return 1;
+ if (!S_ISREG(f1->mode) && !S_ISREG(f2->mode))
+ return 0;
+ if (!S_ISREG(f1->mode))
+ return -1;
+ if (!S_ISREG(f2->mode))
+ return 1;
- if (f1->dev != f2->dev)
- return (f1->dev - f2->dev);
+ if (f1->dev != f2->dev)
+ return (int) (f1->dev > f2->dev ? 1 : -1);
- if (f1->inode != f2->inode)
- return (f1->inode - f2->inode);
+ if (f1->inode != f2->inode)
+ return (int) (f1->inode > f2->inode ? 1 : -1);
- return file_compare(f1,f2);
+ return file_compare(&f1, &f2);
}
-static struct file_struct *hlink_list = NULL;
-static int hlink_count=0;
+static struct file_struct *hlink_list;
+static int hlink_count;
#endif
void init_hard_links(struct file_list *flist)
{
#if SUPPORT_HARD_LINKS
- if (flist->count < 2) return;
+ int i;
+ if (flist->count < 2)
+ return;
- if (hlink_list) free(hlink_list);
-
- if (!(hlink_list =
- (struct file_struct *)malloc(sizeof(hlink_list[0])*flist->count)))
- out_of_memory("init_hard_links");
+ if (hlink_list)
+ free(hlink_list);
- bcopy((char *)flist->files,hlink_list,sizeof(hlink_list[0])*flist->count);
+ if (!(hlink_list =
+ (struct file_struct *) malloc(sizeof(hlink_list[0]) *
+ flist->count)))
+ out_of_memory("init_hard_links");
- qsort(hlink_list,flist->count,
- sizeof(hlink_list[0]),
- (int (*)())hlink_compare);
+ for (i = 0; i < flist->count; i++)
+ memcpy(&hlink_list[i], flist->files[i],
+ sizeof(hlink_list[0]));
- hlink_count=flist->count;
+ qsort(hlink_list, flist->count,
+ sizeof(hlink_list[0]), (int (*)()) hlink_compare);
+
+ hlink_count = flist->count;
#endif
}
int check_hard_link(struct file_struct *file)
{
#if SUPPORT_HARD_LINKS
- int low=0,high=hlink_count;
- int mid=0,ret=0;
-
- if (!hlink_list || !S_ISREG(file->mode)) return 0;
-
- while (low != high) {
- mid = (low+high)/2;
- ret = hlink_compare(&hlink_list[mid],file);
- if (ret == 0) break;
- if (ret > 0)
- high=mid;
- else
- low=mid+1;
- }
-
- if (hlink_compare(&hlink_list[mid],file) != 0) return 0;
-
- if (mid > 0 &&
- S_ISREG(hlink_list[mid-1].mode) &&
- file->dev == hlink_list[mid-1].dev &&
- file->inode == hlink_list[mid-1].inode)
- return 1;
+ int low = 0, high = hlink_count - 1;
+ int ret = 0;
+
+ if (!hlink_list || !S_ISREG(file->mode))
+ return 0;
+
+ while (low != high) {
+ int mid = (low + high) / 2;
+ ret = hlink_compare(&hlink_list[mid], file);
+ if (ret == 0) {
+ low = mid;
+ break;
+ }
+ if (ret > 0)
+ high = mid;
+ else
+ low = mid + 1;
+ }
+
+ /* XXX: To me this looks kind of dodgy -- why do we use [low]
+ * here and [low-1] below? -- mbp */
+ if (hlink_compare(&hlink_list[low], file) != 0)
+ return 0;
+
+ if (low > 0 &&
+ S_ISREG(hlink_list[low - 1].mode) &&
+ file->dev == hlink_list[low - 1].dev &&
+ file->inode == hlink_list[low - 1].inode) {
+ if (verbose >= 2) {
+ rprintf(FINFO, "check_hard_link: \"%s\" is a hard link to file %d, \"%s\"\n",
+ f_name(file), low-1, f_name(&hlink_list[low-1]));
+ }
+ return 1;
+ }
#endif
- return 0;
+ return 0;
}
-/* create any hard links in the flist */
-void do_hard_links(struct file_list *flist)
-{
#if SUPPORT_HARD_LINKS
- int i;
-
- if (!hlink_list) return;
-
- for (i=1;i<hlink_count;i++) {
- if (S_ISREG(hlink_list[i].mode) &&
- S_ISREG(hlink_list[i-1].mode) &&
- hlink_list[i].name && hlink_list[i-1].name &&
- hlink_list[i].dev == hlink_list[i-1].dev &&
- hlink_list[i].inode == hlink_list[i-1].inode) {
- struct stat st1,st2;
-
- if (stat(hlink_list[i-1].name,&st1) != 0) continue;
- if (stat(hlink_list[i].name,&st2) != 0) {
- if (!dry_run && link(hlink_list[i-1].name,hlink_list[i].name) != 0) {
- fprintf(FINFO,"link %s => %s : %s\n",
- hlink_list[i].name,hlink_list[i-1].name,strerror(errno));
- continue;
+static void hard_link_one(int i)
+{
+ STRUCT_STAT st1, st2;
+
+ if (link_stat(f_name(&hlink_list[i - 1]), &st1) != 0)
+ return;
+
+ if (link_stat(f_name(&hlink_list[i]), &st2) != 0) {
+ if (do_link
+ (f_name(&hlink_list[i - 1]),
+ f_name(&hlink_list[i])) != 0) {
+ if (verbose > 0)
+ rprintf(FINFO, "link %s => %s : %s\n",
+ f_name(&hlink_list[i]),
+ f_name(&hlink_list[i - 1]),
+ strerror(errno));
+ return;
+ }
+ } else {
+ if (st2.st_dev == st1.st_dev && st2.st_ino == st1.st_ino)
+ return;
+
+ if (robust_unlink(f_name(&hlink_list[i])) != 0 ||
+ do_link(f_name(&hlink_list[i - 1]),
+ f_name(&hlink_list[i])) != 0) {
+ if (verbose > 0)
+ rprintf(FINFO, "link %s => %s : %s\n",
+ f_name(&hlink_list[i]),
+ f_name(&hlink_list[i - 1]),
+ strerror(errno));
+ return;
+ }
}
- } else {
- if (st2.st_dev == st1.st_dev && st2.st_ino == st1.st_ino) continue;
-
- if (!dry_run && (unlink(hlink_list[i].name) != 0 ||
- link(hlink_list[i-1].name,hlink_list[i].name) != 0)) {
- fprintf(FINFO,"link %s => %s : %s\n",
- hlink_list[i].name,hlink_list[i-1].name,strerror(errno));
- continue;
+ if (verbose > 0)
+ rprintf(FINFO, "%s => %s\n",
+ f_name(&hlink_list[i]),
+ f_name(&hlink_list[i - 1]));
+}
+#endif
+
+
+
+/**
+ * Create any hard links in the global hlink_list. They were put
+ * there by running init_hard_links on the filelist.
+ **/
+void do_hard_links(void)
+{
+#if SUPPORT_HARD_LINKS
+ int i;
+
+ if (!hlink_list)
+ return;
+
+ for (i = 1; i < hlink_count; i++) {
+ if (S_ISREG(hlink_list[i].mode) &&
+ S_ISREG(hlink_list[i - 1].mode) &&
+ hlink_list[i].basename && hlink_list[i - 1].basename &&
+ hlink_list[i].dev == hlink_list[i - 1].dev &&
+ hlink_list[i].inode == hlink_list[i - 1].inode) {
+ hard_link_one(i);
+ }
}
- }
- fprintf(FINFO,"%s => %s\n",
- hlink_list[i].name,hlink_list[i-1].name);
- }
- }
#endif
}
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff