*
* Copyright (C) 1998 Andrew Tridgell
* Copyright (C) 2002 Martin Pool
- * Copyright (C) 2003-2008 Wayne Davison
+ * Copyright (C) 2003-2009 Wayne Davison
*
* 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 <sys/attr.h>
#endif
+#if defined HAVE_SYS_FALLOCATE && !defined HAVE_FALLOCATE
+#include <sys/syscall.h>
+#endif
+
extern int dry_run;
extern int am_root;
+extern int am_sender;
extern int read_only;
extern int list_only;
extern int preserve_perms;
return unlink(fname);
}
-int do_symlink(const char *fname1, const char *fname2)
+#ifdef SUPPORT_LINKS
+int do_symlink(const char *lnk, const char *fname)
{
if (dry_run) return 0;
RETURN_ERROR_IF_RO_OR_LO;
- return symlink(fname1, fname2);
+
+#ifdef NO_SYMLINK_XATTRS
+ /* For --fake-super, we create a normal file with mode 0600
+ * and write the lnk into it. */
+ if (am_root < 0) {
+ int ok, len = strlen(lnk);
+ int fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, S_IWUSR|S_IRUSR);
+ if (fd < 0)
+ return -1;
+ ok = write(fd, lnk, len) == len;
+ if (close(fd) < 0)
+ ok = 0;
+ return ok ? 0 : -1;
+ }
+#endif
+
+ return symlink(lnk, fname);
}
+#ifdef NO_SYMLINK_XATTRS
+ssize_t do_readlink(const char *path, char *buf, size_t bufsiz)
+{
+ /* For --fake-super, we read the link from the file. */
+ if (am_root < 0) {
+ int fd = open(path, O_RDONLY|O_NOFOLLOW);
+ if (fd >= 0) {
+ int len = read(fd, buf, bufsiz);
+ close(fd);
+ return len;
+ }
+ if (errno != ELOOP)
+ return -1;
+ /* A real symlink needs to be turned into a fake one on the receiving
+ * side, so tell the generator that the link has no length. */
+ if (!am_sender)
+ return 0;
+ /* Otherwise fall through and let the sender report the real length. */
+ }
+
+ return readlink(path, buf, bufsiz);
+}
+#endif
+#endif
+
#ifdef HAVE_LINK
int do_link(const char *fname1, const char *fname2)
{
int code;
if (dry_run) return 0;
RETURN_ERROR_IF_RO_OR_LO;
- if (S_ISLNK(mode)) {
#ifdef HAVE_LCHMOD
- code = lchmod(path, mode & CHMOD_BITS);
-#elif defined HAVE_SETATTRLIST
+ code = lchmod(path, mode & CHMOD_BITS);
+#else
+ if (S_ISLNK(mode)) {
+# if defined HAVE_SETATTRLIST
struct attrlist attrList;
uint32_t m = mode & CHMOD_BITS; /* manpage is wrong: not mode_t! */
attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
attrList.commonattr = ATTR_CMN_ACCESSMASK;
code = setattrlist(path, &attrList, &m, sizeof m, FSOPT_NOFOLLOW);
-#else
+# else
code = 1;
-#endif
+# endif
} else
code = chmod(path, mode & CHMOD_BITS); /* DISCOURAGED FUNCTION */
+#endif /* !HAVE_LCHMOD */
if (code != 0 && (preserve_perms || preserve_executability))
return code;
return 0;
return rename(fname1, fname2);
}
+#ifdef HAVE_FTRUNCATE
+int do_ftruncate(int fd, OFF_T size)
+{
+ int ret;
+
+ if (dry_run) return 0;
+ RETURN_ERROR_IF_RO_OR_LO;
+
+ do {
+ ret = ftruncate(fd, size);
+ } while (ret < 0 && errno == EINTR);
+
+ return ret;
+}
+#endif
+
void trim_trailing_slashes(char *name)
{
int l;
return lseek(fd, offset, whence);
#endif
}
+
+#ifdef HAVE_UTIMENSAT
+int do_utimensat(const char *fname, time_t modtime, uint32 mod_nsec)
+{
+ struct timespec t[2];
+
+ if (dry_run) return 0;
+ RETURN_ERROR_IF_RO_OR_LO;
+
+ t[0].tv_sec = 0;
+ t[0].tv_nsec = UTIME_NOW;
+ t[1].tv_sec = modtime;
+ t[1].tv_nsec = mod_nsec;
+ return utimensat(AT_FDCWD, fname, t, AT_SYMLINK_NOFOLLOW);
+}
+#endif
+
+#ifdef HAVE_LUTIMES
+int do_lutimes(const char *fname, time_t modtime, uint32 mod_nsec)
+{
+ struct timeval t[2];
+
+ if (dry_run) return 0;
+ RETURN_ERROR_IF_RO_OR_LO;
+
+ t[0].tv_sec = time(NULL);
+ t[0].tv_usec = 0;
+ t[1].tv_sec = modtime;
+ t[1].tv_usec = mod_nsec / 1000;
+ return lutimes(fname, t);
+}
+#endif
+
+#ifdef HAVE_UTIMES
+int do_utimes(const char *fname, time_t modtime, uint32 mod_nsec)
+{
+ struct timeval t[2];
+
+ if (dry_run) return 0;
+ RETURN_ERROR_IF_RO_OR_LO;
+
+ t[0].tv_sec = time(NULL);
+ t[0].tv_usec = 0;
+ t[1].tv_sec = modtime;
+ t[1].tv_usec = mod_nsec / 1000;
+ return utimes(fname, t);
+}
+
+#elif defined HAVE_UTIME
+int do_utime(const char *fname, time_t modtime, UNUSED(uint32 mod_nsec))
+{
+#ifdef HAVE_STRUCT_UTIMBUF
+ struct utimbuf tbuf;
+#else
+ time_t t[2];
+#endif
+
+ if (dry_run) return 0;
+ RETURN_ERROR_IF_RO_OR_LO;
+
+# ifdef HAVE_STRUCT_UTIMBUF
+ tbuf.actime = time(NULL);
+ tbuf.modtime = modtime;
+ return utime(fname, &tbuf);
+# else
+ t[0] = time(NULL);
+ t[1] = modtime;
+ return utime(fname, t);
+# endif
+}
+
+#else
+#error Need utimes or utime function.
+#endif
+
+#ifdef SUPPORT_PREALLOCATION
+int do_fallocate(int fd, OFF_T offset, OFF_T length)
+{
+#ifdef FALLOC_FL_KEEP_SIZE
+#define DO_FALLOC_OPTIONS FALLOC_FL_KEEP_SIZE
+#else
+#define DO_FALLOC_OPTIONS 0
+#endif
+ RETURN_ERROR_IF(dry_run, 0);
+ RETURN_ERROR_IF_RO_OR_LO;
+#if defined HAVE_FALLOCATE
+ return fallocate(fd, DO_FALLOC_OPTIONS, offset, length);
+#elif defined HAVE_SYS_FALLOCATE
+ return syscall(SYS_fallocate, fd, DO_FALLOC_OPTIONS, (loff_t)offset, (loff_t)length);
+#elif defined HAVE_EFFICIENT_POSIX_FALLOCATE
+ return posix_fallocate(fd, offset, length);
+#else
+#error Coding error in SUPPORT_PREALLOCATION logic.
+#endif
+}
+#endif
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff