glibc/sysdeps/posix/mkstemp.c
Ulrich Drepper c0fb8a563c Update.
1998-06-07 13:32  Ulrich Drepper  <drepper@cygnus.com>

	* libc.map: Add _dl_profile.
	* elf/dl-reloc.c (_dl_relocate_object): Take extra argument, pass
	this to ELF_DYNAMIC_RELOCATE.
	Always allocate array for relocation result if LD_PROFILE is defined.
	* elf/ldsodefs.h: Adjust prototypes.
	* elf/dl-open.c (_dl_open): Call relocation function with extra
	argument.
	* elf/rtld.c: Likewise.
	* elf/dl-profile.c (_dl_mcount): Don't mark as internal function.
	Correct loop condition.
	* elf/dynamic-link.h: Don't examine _dl_profile variable, pass
	consider_profile to runtime setup function.
	* sysdeps/i386/dl-machine.h (elf_machine_runtime_setup): Use
	_dl_runtime_profile for all shared objects if LD_PROFILE is defined.

	* elf/dl-support.c: Define __libc_stack_end.
	* elf/rtld.c: Likewise.
	* sysdeps/generic/libc-start.c: Store last stack address in
	__libc_stack_end.
	* sysdeps/i386/dl-machine.h (_dl_start_user): Store stack address.
	* sysdeps/i386/elf/start.s: Call __libc_start_main with extra argument.

	* elf/elf.h: Include <features.h>, not <sys/cdefs.h>.
	Include <stdint.h>, not <inttypes.h>.

	* elf/sprof.c: Implement flat profiling.

	* libio/fgetc.c: Call _IO_cleanup_region_end with 0 and call
	_IO_funlockfile explicitly.
	* libio/fileops.c: Likewise.
	* libio/fputc.c: Likewise.
	* libio/freopen.c: Likewise.
	* libio/freopen64.c: Likewise.
	* libio/fseek.c: Likewise.
	* libio/fseeko.c: Likewise.
	* libio/fseeko64.c: Likewise.
	* libio/ftello.c: Likewise.
	* libio/ftello64.c: Likewise.
	* libio/getc.c: Likewise.
	* libio/getchar.c: Likewise.
	* libio/iofclose.c: Likewise.
	* libio/iofflush.c: Likewise.
	* libio/iofgetpos.c: Likewise.
	* libio/iofgetpos64.c: Likewise.
	* libio/iofgets.c: Likewise.
	* libio/iofputs.c: Likewise.
	* libio/iofread.c: Likewise.
	* libio/iofsetpos.c: Likewise.
	* libio/iofsetpos64.c: Likewise.
	* libio/ioftell.c: Likewise.
	* libio/iofwrite.c: Likewise.
	* libio/iogetdelim.c: Likewise.
	* libio/iogets.c: Likewise.
	* libio/ioputs.c: Likewise.
	* libio/ioseekoff.c: Likewise.
	* libio/ioseekpos.c: Likewise.
	* libio/iosetbuffer.c: Likewise.
	* libio/iosetvbuf.c: Likewise.
	* libio/ioungetc.c: Likewise.
	* libio/iovsprintf.c: Likewise.
	* libio/iovsscanf.c: Likewise.
	* libio/oldfileops.c: Likewise.
	* libio/oldiofclose.c: Likewise.
	* libio/peekc.c: Likewise.
	* libio/putc.c: Likewise.
	* libio/putchar.c: Likewise.
	* libio/rewind.c: Likewise.

	* malloc/mtrace.c: Pretty print.

	* misc/mntent.h (struct mentent): Make string elements const char *.

	* nis/nis_printf.c: Optimize I/O a little bit.

	* signal/Makefile (distribute): Add sigset-cvt-mask.h.
	* sysdeps/generic/sigset-cvt-mask.h: New file.
	* sysdeps/unix/sysv/linux/sigset-cvt-mask.h: New file.
	* sysdeps/unix/sysv/sysv4/sigset-cvt-mask.h: New file.
	* sysdeps/posix/sigvec.c: Rewrite the use definitions from
	sigset-cvt-mask.h to do the dirty work.
	Patches by Joe Keane.

	* sysdeps/posix/mkstemp.c: Save one precious byte of rodata.

	* sysdeps/unix/sysv/linux/i386/sysdep.h: Rewrite PSEUDO etc to make
	syscall_error label in case of PIC anonymous.
	* sysdeps/unix/sysv/linux/i386/i686/sysdep.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S: Adapt for this change.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Adapt for this change.
	* sysdeps/unix/sysv/linux/i386/s_pread64.S: Adapt for this change.
	* sysdeps/unix/sysv/linux/i386/s_pwrite64.S: Adapt for this change.
	* sysdeps/unix/sysv/linux/i386/socket.S: Adapt for this change.
	* sysdeps/unix/sysv/linux/i386/syscall.S: Adapt for this change.
1998-06-07 14:06:56 +00:00

91 lines
2.7 KiB
C

/* Copyright (C) 1991, 1992, 1996, 1998 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
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/time.h>
/* Generate a unique temporary file name from TEMPLATE.
The last six characters of TEMPLATE must be "XXXXXX";
they are replaced with a string that makes the filename unique.
Returns a file descriptor open on the file for reading and writing. */
int
mkstemp (template)
char *template;
{
static const char letters[62]
= "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
static uint64_t value;
struct timeval tv;
char *XXXXXX;
size_t len;
int count;
len = strlen (template);
if (len < 6 || strcmp (&template[len - 6], "XXXXXX"))
{
__set_errno (EINVAL);
return -1;
}
/* This is where the Xs start. */
XXXXXX = &template[len - 6];
/* Get some more or less random data. */
__gettimeofday (&tv, NULL);
value += ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec ^ getpid ();
for (count = 0; count < TMP_MAX; ++count)
{
uint64_t v = value;
int fd;
/* Fill in the random bits. */
XXXXXX[0] = letters[v % 62];
v /= 62;
XXXXXX[1] = letters[v % 62];
v /= 62;
XXXXXX[2] = letters[v % 62];
v /= 62;
XXXXXX[3] = letters[v % 62];
v /= 62;
XXXXXX[4] = letters[v % 62];
v /= 62;
XXXXXX[5] = letters[v % 62];
fd = open (template, O_RDWR|O_CREAT|O_EXCL, 0600);
if (fd >= 0)
/* The file does not exist. */
return fd;
/* This is a random value. It is only necessary that the next
TMP_MAX values generated by adding 7777 to VALUE are different
with (module 2^32). */
value += 7777;
}
/* We return the null string if we can't find a unique file name. */
template[0] = '\0';
return -1;
}