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* elf/dl-misc.c: Include <sysdep.h>.
(_dl_debug_vdprintf): Only take dl_load_lock if not _dl_starting_up. * sysdeps/generic/ldsodefs.h (_dl_starting_up): Declare it here. * sysdeps/unix/sysv/linux/init-first.c: Not here. * sysdeps/powerpc/elf/libc-start.c: Or here. * sysdeps/unix/sysv/aix/libc-start.c: Or here. * sysdeps/unix/sysv/aix/start-libc.c: Or here. * sysdeps/unix/sysv/aix/init-first.c: Or here. * sysdeps/generic/libc-start.c: Or here. * sysdeps/unix/sysv/linux/init-first.c (init): Protect _dl_starting_up access with [! SHARED]. * sysdeps/unix/sysv/aix/init-first.c (init): Likewise.
This commit is contained in:
Roland McGrath
parent
369b849f1a
commit
5bbcba0db5
14
ChangeLog
14
ChangeLog
@ -1,5 +1,8 @@
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2002-10-24 Jakub Jelinek <jakub@redhat.com>
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* elf/dl-misc.c: Include <sysdep.h>.
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(_dl_debug_vdprintf): Only take dl_load_lock if not _dl_starting_up.
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* sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h (INTERNAL_SYSCALL,
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INTERNAL_SYSCALL_ERROR_P, INTERNAL_SYSCALL_ERRNO): New macros.
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(INLINE_SYSCALL): Use that.
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@ -27,6 +30,17 @@
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2002-10-24 Roland McGrath <roland@redhat.com>
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* sysdeps/generic/ldsodefs.h (_dl_starting_up): Declare it here.
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* sysdeps/unix/sysv/linux/init-first.c: Not here.
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* sysdeps/powerpc/elf/libc-start.c: Or here.
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* sysdeps/unix/sysv/aix/libc-start.c: Or here.
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* sysdeps/unix/sysv/aix/start-libc.c: Or here.
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* sysdeps/unix/sysv/aix/init-first.c: Or here.
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* sysdeps/generic/libc-start.c: Or here.
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* sysdeps/unix/sysv/linux/init-first.c (init): Protect _dl_starting_up
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access with [! SHARED].
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* sysdeps/unix/sysv/aix/init-first.c (init): Likewise.
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* libio/bug-wfflush.c: New file.
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* libio/Makefile (tests): Add bug-wfflush.
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@ -30,6 +30,7 @@
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/uio.h>
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#include <sysdep.h>
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#include <stdio-common/_itoa.h>
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#include <bits/libc-lock.h>
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@ -81,7 +82,7 @@ _dl_sysdep_read_whole_file (const char *file, size_t *sizep, int prot)
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}
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/* Bare-bone printf implementation. This function only knows about
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/* Bare-bones printf implementation. This function only knows about
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the formats and flags needed and can handle only up to 64 stripes in
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the output. */
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static void
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@ -250,10 +251,17 @@ _dl_debug_vdprintf (int fd, int tag_p, const char *fmt, va_list arg)
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INTERNAL_SYSCALL (writev, 3, fd, iov, niov);
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#elif RTLD_PRIVATE_ERRNO
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/* We have to take this lock just to be sure we don't clobber the private
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errno when it's being used by another thread that cares about it. */
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__libc_lock_lock_recursive (GL(dl_load_lock));
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__writev (fd, iov, niov);
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__libc_lock_unlock_recursive (GL(dl_load_lock));
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errno when it's being used by another thread that cares about it.
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Yet we must be sure not to try calling the lock functions before
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the thread library is fully initialized. */
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if (__builtin_expect (INTUSE (_dl_starting_up), 0))
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__writev (fd, iov, niov);
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else
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{
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__libc_lock_lock_recursive (GL(dl_load_lock));
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__writev (fd, iov, niov);
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__libc_lock_unlock_recursive (GL(dl_load_lock));
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}
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#else
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__writev (fd, iov, niov);
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#endif
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@ -416,6 +416,13 @@ extern const char _dl_out_of_memory[];
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extern const char _dl_out_of_memory_internal[] attribute_hidden;
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#endif
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#ifndef SHARED
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/* Flag set at startup and cleared when the last initializer has run. */
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extern int _dl_starting_up;
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weak_extern (_dl_starting_up)
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#elif defined IS_IN_rtld
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extern int _dl_starting_up_internal attribute_hidden;
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#endif
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/* OS-dependent function to open the zero-fill device. */
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extern int _dl_sysdep_open_zero_fill (void); /* dl-sysdep.c */
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@ -24,8 +24,6 @@
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extern void __libc_init_first (int argc, char **argv, char **envp);
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extern int _dl_starting_up;
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weak_extern (_dl_starting_up)
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extern int __libc_multiple_libcs;
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extern void *__libc_stack_end;
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@ -24,9 +24,6 @@
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extern void __libc_init_first (int argc, char **argv, char **envp);
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extern int _dl_starting_up;
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weak_extern (_dl_starting_up)
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extern int __cache_line_size;
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weak_extern (__cache_line_size)
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@ -37,9 +37,6 @@ extern void __libc_init (int, char **, char **);
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/* The function is called from assembly stubs the compiler can't see. */
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static void init (int, char **, char **) __attribute__ ((unused));
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extern int _dl_starting_up;
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weak_extern (_dl_starting_up)
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/* Set nonzero if we have to be prepared for more then one libc being
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used in the process. Safe assumption if initializer never runs. */
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int __libc_multiple_libcs attribute_hidden = 1;
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@ -60,10 +57,12 @@ init (int argc, char **argv, char **envp)
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If the address would be taken inside the expression the optimizer
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would try to be too smart and throws it away. Grrr. */
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#ifndef SHARED
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/* XXX disable dl for now
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int *dummy_addr = &_dl_starting_up;
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__libc_multiple_libcs = dummy_addr && !_dl_starting_up; */
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#endif
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/* Save the command-line arguments. */
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__libc_argc = argc;
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@ -31,8 +31,6 @@ typedef unsigned char uchar;
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extern void __libc_init_first (int argc, char **argv, char **envp);
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/* XXX disable for now
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extern int _dl_starting_up;
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weak_extern (_dl_starting_up)
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extern int __libc_multiple_libcs; */
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/* XXX normally defined in generic/dl-sydep.c, hack it into existance
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@ -31,8 +31,6 @@ typedef unsigned char uchar;
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extern void __libc_init_first (int argc, char **argv, char **envp);
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/* XXX disable for now
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extern int _dl_starting_up;
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weak_extern (_dl_starting_up)
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extern int __libc_multiple_libcs; */
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/* XXX normally defined in generic/dl-sydep.c, hack it into existance
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@ -35,9 +35,6 @@
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/* The function is called from assembly stubs the compiler can't see. */
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static void init (int, char **, char **) __attribute__ ((unused));
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extern int _dl_starting_up;
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weak_extern (_dl_starting_up)
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/* Set nonzero if we have to be prepared for more then one libc being
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used in the process. Safe assumption if initializer never runs. */
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int __libc_multiple_libcs attribute_hidden = 1;
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@ -54,12 +51,15 @@ init (int argc, char **argv, char **envp)
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#ifdef USE_NONOPTION_FLAGS
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extern void __getopt_clean_environment (char **);
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#endif
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#ifndef SHARED
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/* The next variable is only here to work around a bug in gcc <= 2.7.2.2.
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If the address would be taken inside the expression the optimizer
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would try to be too smart and throws it away. Grrr. */
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int *dummy_addr = &_dl_starting_up;
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__libc_multiple_libcs = dummy_addr && !_dl_starting_up;
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#endif
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/* Make sure we don't initialize twice. */
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if (!__libc_multiple_libcs)
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