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authorRoland McGrath <roland@gnu.org>1996-02-27 00:55:03 +0000
committerRoland McGrath <roland@gnu.org>1996-02-27 00:55:03 +0000
commit92777700d297c23825e785e6f6a0161bd398705d (patch)
tree18a993370c7cac36c18f22726cab004f54899122 /dirent
parenta182affdd948423d4779f848954e411c94f41a54 (diff)
downloadglibc-92777700d297c23825e785e6f6a0161bd398705d.tar.gz
Mon Feb 26 10:22:30 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>cvs/libc-960227
* sysdeps/unix/dirstream.h: Rewritten. * sysdeps/unix/readdir.c: Rewritten. * sysdeps/unix/telldir.c: Rewritten. * sysdeps/unix/closedir.c: Use <...> instead of "..." for dirstream.h. Remove __ from DIR struct member names. * sysdeps/unix/dirfd.c: Likewise. * sysdeps/unix/seekdir.c: Likewise. * sysdeps/unix/rewinddir.c: Likewise. * sysdeps/unix/opendir.c: Likewise. Don't allocate extra space after DIR structure. * sysdeps/stub/direct.h: File removed. * sysdeps/unix/bsd/bsd4.4/direct.h: File removed. * sysdeps/unix/bsd/direct.h: File removed. * sysdeps/unix/common/direct.h: File removed. * sysdeps/unix/sysv/irix4/direct.h: File removed. * sysdeps/unix/sysv/isc3/direct.h: File removed. * sysdeps/unix/sysv/sco3.2.4/direct.h: File removed. * sysdeps/unix/sysv/sysv4/solaris2/direct.h: File removed. * sysdeps/unix/common/direntry.h: New file. * sysdeps/unix/bsd/direntry.h: New file. * sysdeps/unix/bsd/bsd4.4/direntry.h: New file. * sysdeps/unix/sysv/direntry.h: New file. * sysdeps/stub/direntry.h: New file. * dirent/dirent.h (struct dirent): Type removed. Include <direntry.h> to define it. (_D_EXACT_NAMLEN, _D_ALLOC_NAMLEN): New macros. * dirent/Makefile (headers): Add direntry.h. (distribute): Remove direct.h. * sysdeps/posix/getcwd.c: Use new macros instead of d_namlen. * dirent/scandir.c: Likewise. * io/fts.c (fts_build): Likewise. * io/ftw.c (ftw_dir): Likewise. * sysdeps/posix/ttyname.c: Likewise. * sysdeps/unix/sysv/sysv4/solaris2/syscalls.list: New file. * sysdeps/mach/hurd/profil.c (MAX_PC_SAMPLES): New macro. (collector_timeout): New static variable. (update_waiter): Actually call __task_enable_pc_sampling. Set collector_timeout based on the `tick' count returned. (profile_waiter): Use MAX_PC_SAMPLES. Set nsamples before RPC. Use collector_timeout in __mach_msg call. * gmon/Makefile (noprof): New variable containing mcount. Append profil unless it is in $(unix-syscalls). (mcount.po): Use $(noprof) for list of targets in this rule. * libc-symbols.h: Define _LIBC before #include <config.h>. Sun Feb 25 12:29:23 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> * config.h.in [_LIBC] (HAVE_STRERROR): Define it. Protect 2nd page of #undef's for generator programs with #ifndef _LIBC. * time/zic.c, time/zdump.c, time/private.h: Updated from ADO's latest. Fri Feb 9 12:40:19 1996 Brendan Kehoe <brendan@lisa.cygnus.com> * libio/cleanup.c (_IO_cleanup_registration_needed) [!_G_HAVE_ATEXIT]: Init to NULL. * libio/filedoalloc.c (_IO_cleanup_registration_needed): Remove decl. Thu Feb 8 08:12:50 1996 Brendan Kehoe <brendan@cygnus.com> * libio/filedoalloc.c (_IO_cleanup_registration_needed): Revert previous change, since cleanup.c only defines it if _G_HAVE_ATEXIT. Wed Feb 7 15:10:17 1996 Brendan Kehoe <brendan@lisa.cygnus.com> * libio/filedoalloc.c (_IO_cleanup_registration_needed): Declare as extern. Sat Feb 24 11:34:13 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu> * sysdeps/i386/memcmp.S: Fix argument %esp offsets. * time/sys/time.h (timeradd, timersub): New macros; BSD has these.
Diffstat (limited to 'dirent')
-rw-r--r--dirent/Makefile6
-rw-r--r--dirent/dirent.h52
-rw-r--r--dirent/scandir.c2
3 files changed, 39 insertions, 21 deletions
diff --git a/dirent/Makefile b/dirent/Makefile
index 532020d1eb..b6a42190eb 100644
--- a/dirent/Makefile
+++ b/dirent/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@@ -21,11 +21,11 @@
#
subdir := dirent
-headers := dirent.h
+headers := dirent.h direntry.h
routines := opendir closedir readdir rewinddir \
seekdir telldir scandir alphasort \
getdents dirfd
-distribute := direct.h dirstream.h
+distribute := dirstream.h
tests := list tst-seekdir
diff --git a/dirent/dirent.h b/dirent/dirent.h
index 5b99437301..d93a146a83 100644
--- a/dirent/dirent.h
+++ b/dirent/dirent.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -29,30 +29,48 @@ __BEGIN_DECLS
#include <gnu/types.h>
+/* This file defines `struct dirent'.
-/* Directory entry structure.
+ It defines the macro `_DIRENT_HAVE_D_NAMLEN' iff there is a `d_namlen'
+ member that gives the length of `d_name'.
- This structure is laid out identically to the `struct direct' that
- represents directory entries in the GNU Hurd and in BSD 4.4 (and
- incidentally, on disk in the Berkeley fast file system). The `readdir'
- implementations for GNU and BSD know this; you must change them if you
- change this structure. */
+ It defines the macro `_DIRENT_HAVE_D_RECLEN' iff there is a `d_reclen'
+ member that gives the size of the entire directory entry. */
-struct dirent
- {
- __ino_t d_fileno; /* File serial number. */
- unsigned short int d_reclen; /* Length of the whole `struct dirent'. */
- unsigned char d_type; /* File type, possibly unknown. */
- unsigned char d_namlen; /* Length of the file name. */
-
- /* Only this member is in the POSIX standard. */
- char d_name[1]; /* File name (actually longer). */
- };
+#include <direntry.h>
#if defined(__USE_BSD) || defined(__USE_MISC)
#define d_ino d_fileno /* Backward compatibility. */
#endif
+/* These macros extract size information from a `struct dirent *'.
+ They may evaluate their argument multiple times, so it must not
+ have side effects. Each of these may involve a relatively costly
+ call to `strlen' on some systems, so these values should be cached.
+
+ _D_EXACT_NAMLEN (DP) returns the length of DP->d_name, not including
+ its terminating null character.
+
+ _D_ALLOC_NAMLEN (DP) returns a size at least (_D_EXACT_NAMLEN (DP) + 1);
+ that is, the allocation size needed to hold the DP->d_name string.
+ Use this macro when you don't need the exact length, just an upper bound.
+ This macro is less likely to require calling `strlen' than _D_EXACT_NAMLEN.
+ */
+
+#ifdef _DIRENT_HAVE_D_NAMLEN
+#define _D_EXACT_NAMLEN(d) ((d)->d_namlen)
+#define _D_ALLOC_NAMLEN(d) (_D_EXACT_NAMLEN (d) + 1)
+#else
+#define _D_EXACT_NAMLEN(d) (strlen ((d)->d_name))
+#ifdef _DIRENT_HAVE_D_RECLEN
+#define _D_ALLOC_NAMLEN(d) (((char *) (d) + (d)->d_reclen) - &(d)->d_name[0])
+#else
+#define _D_ALLOC_NAMLEN(d) (sizeof (d)->d_name > 1 ? sizeof (d)->d_name : \
+ _D_EXACT_NAMLEN (d) + 1)
+#endif
+#endif
+
+
#ifdef __USE_BSD
/* File types for `d_type'. */
enum
diff --git a/dirent/scandir.c b/dirent/scandir.c
index e2ef63a9ce..6907f0873f 100644
--- a/dirent/scandir.c
+++ b/dirent/scandir.c
@@ -64,7 +64,7 @@ DEFUN(scandir, (dir, namelist, select, cmp),
v = new;
}
- dsize = &d->d_name[d->d_namlen + 1] - (char *) d;
+ dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
v[i] = (struct dirent *) malloc (dsize);
if (v[i] == NULL)
goto lose;