/*
- * Sherlock Library -- Large File Support
+ * UCW Library -- Large File Support
*
- * (c) 1999 Martin Mares, <mj@atrey.karlin.mff.cuni.cz>
+ * (c) 1999--2002 Martin Mares <mj@ucw.cz>
+ *
+ * This software may be freely distributed and used according to the terms
+ * of the GNU Lesser General Public License.
*/
-#ifndef _SHERLOCK_LFS_H
-#define _SHERLOCK_LFS_H
+#ifndef _UCW_LFS_H
+#define _UCW_LFS_H
-#ifdef SHERLOCK_CONFIG_LFS
+#include <fcntl.h>
+#include <unistd.h>
-#ifndef O_LARGEFILE
-#if defined(__linux__) && defined(__i386__)
-#define O_LARGEFILE 0100000
-#else
-#error O_LARGEFILE unknown
-#endif
-#endif
+#ifdef CONFIG_LFS
-#if 0
+#define sh_open open64
+#define sh_seek lseek64
+#define sh_pread pread64
+#define sh_pwrite pwrite64
+#define sh_ftruncate ftruncate64
+#define sh_mmap(a,l,p,f,d,o) mmap64(a,l,p,f,d,o)
+#define sh_pread pread64
+#define sh_pwrite pwrite64
+#define sh_stat stat64
+#define sh_fstat fstat64
+typedef struct stat64 sh_stat_t;
-/* A "do it yourself" solution */
+#else /* !CONFIG_LFS */
-#include <asm/unistd.h>
-#include <errno.h>
+#define sh_open open
+#define sh_seek(f,o,w) lseek(f,o,w)
+#define sh_ftruncate(f,o) ftruncate(f,o)
+#define sh_mmap(a,l,p,f,d,o) mmap(a,l,p,f,d,o)
+#define sh_pread pread
+#define sh_pwrite pwrite
+#define sh_stat stat
+#define sh_fstat fstat
+typedef struct stat sh_stat_t;
-_syscall5(int, _llseek, int, fd, int, hi, int, lo, loff_t *, result, int, whence);
+#endif /* !CONFIG_LFS */
-extern inline loff_t sh_seek(int fd, sh_off_t pos, int whence)
-{
- loff_t result;
- int err;
+#define HAVE_PREAD
- err = _llseek(fd, pos >> 32, pos, &result, whence);
- return (err < 0) ? err : result;
+static inline sh_off_t
+sh_file_size(byte *name)
+{
+ int fd = sh_open(name, O_RDONLY);
+ if (fd < 0)
+ die("Cannot open %s: %m", name);
+ sh_off_t len = sh_seek(fd, 0, SEEK_END);
+ close(fd);
+ return len;
}
-#else
-
-/* Touching hidden places in glibc */
-extern loff_t llseek(int fd, loff_t pos, int whence);
-#define sh_seek(f,o,w) llseek(f,o,w)
-
-#endif
-
-#else /* !SHERLOCK_CONFIG_LFS */
-
-#define sh_seek(f,o,w) lseek(f,o,w)
-#endif /* !SHERLOCK_CONFIG_LFS */
-#endif /* !_SHERLOCK_LFS_H */
+#endif /* !_UCW_LFS_H */