+1998-08-25 Ulrich Drepper <drepper@cygnus.com>
+
+ * sysdeps/generic/dl-cache.c: Move static variable cache and cachesize
+ to toplevel.
+ (_dl_unload_cache): New function.
+ * elf/Versions [libc GLIBC_2.1]: Add _dl_unload_cache.
+ * elf/dl-open.c (_dl_open): Unload map file before freeing the lock.
+ * elf/rtld (dl_main): Unload map file before jumping to user code.
+
+ * sysdeps/unix/sysv/linux/alpha/bits/fcntl.h: Define O_DIRECT.
+ Correct comment for O_LARGEFILE.
+ * sysdeps/unix/sysv/linux/bits/fcntl.h: Define O_DIRECT.
+ Change O_LARGEFILE to correct value.
+
+1998-08-25 14:34 Ulrich Drepper <drepper@cygnus.com>
+
+ * libio/iogetline.c (_IO_getline_info): Don't read anything for
+ N == 0. Patch by HJ Lu.
+
1998-08-25 11:43 Ulrich Drepper <drepper@cygnus.com>
* elf/elf.h: Add syminfo stuff and other DT_* from Solaris' ELF.
_dl_profile; _dl_profile_map; _dl_profile_output; _dl_start_profile;
# functions used in other libraries
- _dl_mcount; _dl_mcount_wrapper; _dl_mcount_wrapper_check;
+ _dl_mcount; _dl_mcount_wrapper; _dl_mcount_wrapper_check; _dl_unload_cache;
}
}
#include <errno.h>
#include <stdlib.h>
#include <string.h>
+#include <sys/mman.h> /* Check whether MAP_COPY is defined. */
#include <bits/libc-lock.h>
#include <elf/ldsodefs.h>
ElfW(Addr) *user_entry));
weak_extern (_dl_sysdep_start)
+/* This function is used to unload the cache file if necessary. */
+extern void _dl_unload_cache (void);
+
extern int __libc_multiple_libcs; /* Defined in init-first.c. */
extern int __libc_argc;
args.map = NULL;
errcode = _dl_catch_error (&errstring, dl_open_worker, &args);
+#ifndef MAP_COPY
+ /* We must munmap() the cache file. */
+ _dl_unload_cache ();
+#endif
+
/* Release the lock. */
__libc_lock_unlock (_dl_load_lock);
ElfW(Addr) *user_entry));
extern void _dl_sysdep_start_cleanup (void);
+/* This function is used to unload the cache file if necessary. */
+extern void _dl_unload_cache (void);
+
/* System-dependent function to read a file's whole contents
in the most convenient manner available. */
extern void *_dl_sysdep_read_whole_file (const char *filename,
_dl_debug_state ();
}
+#ifndef MAP_COPY
+ /* We must munmap() the cache file. */
+ _dl_unload_cache ();
+#endif
+
/* Now enable profiling if needed. */
if (_dl_profile_map != NULL)
/* We must prepare the profiling. */
char *ptr = buf;
if (eof != NULL)
*eof = 0;
- do
+ while (n != 0);
{
_IO_ssize_t len = fp->_IO_read_end - fp->_IO_read_ptr;
if (len <= 0)
ptr += len;
n -= len;
}
- } while (n != 0);
+ }
return ptr - buf;
}
} libs[0];
};
+/* This is the starting address and the size of the mmap()ed file. */
+static struct cache_file *cache;
+static size_t cachesize;
+
/* This is the cache ID we expect. Normally it is 3 for glibc linked
binaries. */
int _dl_correct_cache_id = 3;
const char *
_dl_load_cache_lookup (const char *name)
{
- static struct cache_file *cache;
- static size_t cachesize;
unsigned int i;
const char *best;
return best;
}
+
+#ifndef MAP_COPY
+/* If the system does not support MAP_COPY we cannot leave the file open
+ all the time since this would create problems when the file is replaced.
+ Therefore we provide this function to close the file and open it again
+ once needed. */
+void
+_dl_unload_cache (void)
+{
+ if (cache != NULL && cache != (struct cache_file *) -1)
+ {
+ __munmap (cache, cachesize);
+ cache = NULL;
+ }
+}
+#endif
#define O_FSYNC O_SYNC
#define O_ASYNC 020000 /* fcntl, for BSD compatibility */
-/* XXX missing */
+#ifdef __USE_GNU
+# define O_DIRECT 040000 /* Direct disk access. */
+#endif
+
+/* Not necessary, files are always with 64bit off_t. */
#define O_LARGEFILE 0
/* Values for the second argument to `fcntl'. */
#define O_FSYNC O_SYNC
#define O_ASYNC 020000
+#ifdef __USE_GNU
+# define O_DIRECT 040000 /* Direct disk access. */
+#endif
+
/* For now Linux has synchronisity options for data and read operations.
We define the symbols here but let them do the same as O_SYNC since
this is a superset. */
# define O_RSYNC O_SYNC /* Synchronize read operations. */
#endif
-/* XXX missing */
#ifdef __USE_LARGEFILE64
-# define O_LARGEFILE 0
+# define O_LARGEFILE 0100000
#endif
/* Values for the second argument to `fcntl'. */