| Age | Commit message (Collapse) | Author | Files | Lines |
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This commit puts all libio vtables in a dedicated, read-only ELF
section, so that they are consecutive in memory. Before any indirect
jump, the vtable pointer is checked against the section boundaries,
and the process is terminated if the vtable pointer does not fall into
the special ELF section.
To enable backwards compatibility, a special flag variable
(_IO_accept_foreign_vtables), protected by the pointer guard, avoids
process termination if libio stream object constructor functions have
been called earlier. Such constructor functions are called by the GCC
2.95 libstdc++ library, and this mechanism ensures compatibility with
old binaries. Existing callers inside glibc of these functions are
adjusted to call the original functions, not the wrappers which enable
vtable compatiblity.
The compatibility mechanism is used to enable passing FILE * objects
across a static dlopen boundary, too.
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This automatically-generated patch converts 703 function definitions
in glibc from old-style K&R to prototype-style.
This conversion is deliberately simplistic, excluding any tricky cases
as even a patch covering only simple cases is still very large.
Currently excluded are: sysdeps files (to improve test coverage for
the initial patch); files containing assertions (to avoid line number
changes so that generated libraries can be compared); any cases where
the generated function declaration would involve lines over 79
characters and so need to be wrapped; any cases with array parameters
or other cases where parameter declarators don't end with the
parameter name; any other cases that my script didn't parse.
I didn't try to make the ChangeLog generation indicate when function
definitions are conditional; it just lists the functions changed
without regard to that.
Tested for x86_64 and x86 (testsuite, and that installed stripped
shared libraries are unchanged by the patch).
* crypt/cert.c (good_bye): Convert to prototype-style function
definition.
(get8): Likewise.
(put8): Likewise.
* crypt/crypt-entry.c (crypt): Likewise.
(__fcrypt): Likewise.
* crypt/crypt_util.c (_ufc_prbits): Likewise.
(_ufc_set_bits): Likewise.
(_ufc_clearmem): Likewise.
(__init_des_r): Likewise.
(shuffle_sb): Likewise.
(shuffle_sb): Likewise.
(_ufc_setup_salt_r): Likewise.
(_ufc_mk_keytab_r): Likewise.
(_ufc_dofinalperm_r): Likewise.
(encrypt): Likewise.
(__setkey_r): Likewise.
(setkey): Likewise.
* crypt/md5.c (md5_init_ctx): Likewise.
(md5_read_ctx): Likewise.
(md5_finish_ctx): Likewise.
(md5_stream): Likewise.
(md5_buffer): Likewise.
(md5_process_bytes): Likewise.
* crypt/sha256.c (__sha256_init_ctx): Likewise.
(__sha256_finish_ctx): Likewise.
(__sha256_process_bytes): Likewise.
* crypt/sha512.c (__sha512_init_ctx): Likewise.
(__sha512_finish_ctx): Likewise.
(__sha512_process_bytes): Likewise.
* ctype/isctype.c (__isctype): Likewise.
* debug/backtrace.c (__backtrace): Likewise.
* debug/backtracesymsfd.c (__backtrace_symbols_fd): Likewise.
* debug/fgets_chk.c (__fgets_chk): Likewise.
* debug/fgets_u_chk.c (__fgets_unlocked_chk): Likewise.
* debug/memcpy_chk.c (__memcpy_chk): Likewise.
* debug/memmove_chk.c (MEMMOVE_CHK): Likewise.
* debug/mempcpy_chk.c (__mempcpy_chk): Likewise.
* debug/memset_chk.c (__memset_chk): Likewise.
* debug/strcat_chk.c (__strcat_chk): Likewise.
* debug/strncat_chk.c (__strncat_chk): Likewise.
* debug/strncpy_chk.c (__strncpy_chk): Likewise.
* debug/vsprintf_chk.c (_IO_str_chk_overflow): Likewise.
* dirent/dirfd.c (dirfd): Likewise.
* dirent/getdents.c (__getdirentries): Likewise.
* dirent/getdents64.c (getdirentries64): Likewise.
* dirent/rewinddir.c (__rewinddir): Likewise.
* dirent/seekdir.c (seekdir): Likewise.
* dirent/telldir.c (telldir): Likewise.
* elf/sln.c (makesymlinks): Likewise.
(makesymlink): Likewise.
* gmon/gmon.c (__moncontrol): Likewise.
(__monstartup): Likewise.
(write_hist): Likewise.
(write_call_graph): Likewise.
(write_bb_counts): Likewise.
* grp/setgroups.c (setgroups): Likewise.
* inet/inet_lnaof.c (inet_lnaof): Likewise.
* inet/inet_net.c (inet_network): Likewise.
* inet/inet_netof.c (inet_netof): Likewise.
* inet/rcmd.c (rresvport_af): Likewise.
(rresvport): Likewise.
* io/access.c (__access): Likewise.
* io/chdir.c (__chdir): Likewise.
* io/chmod.c (__chmod): Likewise.
* io/chown.c (__chown): Likewise.
* io/close.c (__close): Likewise.
* io/creat.c (creat): Likewise.
* io/creat64.c (creat64): Likewise.
* io/dup.c (__dup): Likewise.
* io/dup2.c (__dup2): Likewise.
* io/dup3.c (__dup3): Likewise.
* io/euidaccess.c (__euidaccess): Likewise.
* io/faccessat.c (faccessat): Likewise.
* io/fchmod.c (__fchmod): Likewise.
* io/fchmodat.c (fchmodat): Likewise.
* io/fchown.c (__fchown): Likewise.
* io/fchownat.c (fchownat): Likewise.
* io/fcntl.c (__fcntl): Likewise.
* io/flock.c (__flock): Likewise.
* io/fts.c (fts_load): Likewise.
(fts_close): Likewise.
(fts_read): Likewise.
(fts_set): Likewise.
(fts_children): Likewise.
(fts_build): Likewise.
(fts_stat): Likewise.
(fts_sort): Likewise.
(fts_alloc): Likewise.
(fts_lfree): Likewise.
(fts_palloc): Likewise.
(fts_padjust): Likewise.
(fts_maxarglen): Likewise.
(fts_safe_changedir): Likewise.
* io/getwd.c (getwd): Likewise.
* io/isatty.c (__isatty): Likewise.
* io/lchown.c (__lchown): Likewise.
* io/link.c (__link): Likewise.
* io/linkat.c (linkat): Likewise.
* io/lseek.c (__libc_lseek): Likewise.
* io/mkdir.c (__mkdir): Likewise.
* io/mkdirat.c (mkdirat): Likewise.
* io/mkfifo.c (mkfifo): Likewise.
* io/mkfifoat.c (mkfifoat): Likewise.
* io/open.c (__libc_open): Likewise.
* io/open64.c (__libc_open64): Likewise.
* io/readlink.c (__readlink): Likewise.
* io/readlinkat.c (readlinkat): Likewise.
* io/rmdir.c (__rmdir): Likewise.
* io/symlink.c (__symlink): Likewise.
* io/symlinkat.c (symlinkat): Likewise.
* io/ttyname.c (ttyname): Likewise.
* io/ttyname_r.c (__ttyname_r): Likewise.
* io/umask.c (__umask): Likewise.
* io/unlink.c (__unlink): Likewise.
* io/unlinkat.c (unlinkat): Likewise.
* io/utime.c (utime): Likewise.
* libio/clearerr.c (clearerr): Likewise.
* libio/clearerr_u.c (clearerr_unlocked): Likewise.
* libio/feof.c (_IO_feof): Likewise.
* libio/feof_u.c (feof_unlocked): Likewise.
* libio/ferror.c (_IO_ferror): Likewise.
* libio/ferror_u.c (ferror_unlocked): Likewise.
* libio/filedoalloc.c (_IO_file_doallocate): Likewise.
* libio/fileno.c (__fileno): Likewise.
* libio/fputc.c (fputc): Likewise.
* libio/fputc_u.c (fputc_unlocked): Likewise.
* libio/fputwc.c (fputwc): Likewise.
* libio/fputwc_u.c (fputwc_unlocked): Likewise.
* libio/freopen.c (freopen): Likewise.
* libio/freopen64.c (freopen64): Likewise.
* libio/fseek.c (fseek): Likewise.
* libio/fseeko.c (fseeko): Likewise.
* libio/fseeko64.c (fseeko64): Likewise.
* libio/ftello.c (__ftello): Likewise.
* libio/ftello64.c (ftello64): Likewise.
* libio/fwide.c (fwide): Likewise.
* libio/genops.c (_IO_un_link): Likewise.
(_IO_link_in): Likewise.
(_IO_least_marker): Likewise.
(_IO_switch_to_main_get_area): Likewise.
(_IO_switch_to_backup_area): Likewise.
(_IO_switch_to_get_mode): Likewise.
(_IO_free_backup_area): Likewise.
(_IO_switch_to_put_mode): Likewise.
(__overflow): Likewise.
(__underflow): Likewise.
(__uflow): Likewise.
(_IO_setb): Likewise.
(_IO_doallocbuf): Likewise.
(_IO_default_underflow): Likewise.
(_IO_default_uflow): Likewise.
(_IO_default_xsputn): Likewise.
(_IO_sgetn): Likewise.
(_IO_default_xsgetn): Likewise.
(_IO_sync): Likewise.
(_IO_default_setbuf): Likewise.
(_IO_default_seekpos): Likewise.
(_IO_default_doallocate): Likewise.
(_IO_init): Likewise.
(_IO_old_init): Likewise.
(_IO_default_sync): Likewise.
(_IO_default_finish): Likewise.
(_IO_default_seekoff): Likewise.
(_IO_sputbackc): Likewise.
(_IO_sungetc): Likewise.
(_IO_set_column): Likewise.
(_IO_set_column): Likewise.
(_IO_adjust_column): Likewise.
(_IO_get_column): Likewise.
(_IO_init_marker): Likewise.
(_IO_remove_marker): Likewise.
(_IO_marker_difference): Likewise.
(_IO_marker_delta): Likewise.
(_IO_seekmark): Likewise.
(_IO_unsave_markers): Likewise.
(_IO_nobackup_pbackfail): Likewise.
(_IO_default_pbackfail): Likewise.
(_IO_default_seek): Likewise.
(_IO_default_stat): Likewise.
(_IO_default_read): Likewise.
(_IO_default_write): Likewise.
(_IO_default_showmanyc): Likewise.
(_IO_default_imbue): Likewise.
(_IO_iter_next): Likewise.
(_IO_iter_file): Likewise.
* libio/getc.c (_IO_getc): Likewise.
* libio/getwc.c (_IO_getwc): Likewise.
* libio/iofclose.c (_IO_new_fclose): Likewise.
* libio/iofdopen.c (_IO_new_fdopen): Likewise.
* libio/iofflush.c (_IO_fflush): Likewise.
* libio/iofflush_u.c (__fflush_unlocked): Likewise.
* libio/iofgetpos.c (_IO_new_fgetpos): Likewise.
* libio/iofgetpos64.c (_IO_new_fgetpos64): Likewise.
* libio/iofgets.c (_IO_fgets): Likewise.
* libio/iofgets_u.c (__fgets_unlocked): Likewise.
* libio/iofgetws.c (fgetws): Likewise.
* libio/iofgetws_u.c (fgetws_unlocked): Likewise.
* libio/iofopen64.c (_IO_fopen64): Likewise.
* libio/iofopncook.c (_IO_cookie_read): Likewise.
(_IO_cookie_write): Likewise.
(_IO_cookie_seek): Likewise.
(_IO_cookie_close): Likewise.
(_IO_cookie_seekoff): Likewise.
(_IO_old_cookie_seek): Likewise.
* libio/iofputs.c (_IO_fputs): Likewise.
* libio/iofputs_u.c (__fputs_unlocked): Likewise.
* libio/iofputws.c (fputws): Likewise.
* libio/iofputws_u.c (fputws_unlocked): Likewise.
* libio/iofread.c (_IO_fread): Likewise.
* libio/iofread_u.c (__fread_unlocked): Likewise.
* libio/iofsetpos.c (_IO_new_fsetpos): Likewise.
* libio/iofsetpos64.c (_IO_new_fsetpos64): Likewise.
* libio/ioftell.c (_IO_ftell): Likewise.
* libio/iofwrite.c (_IO_fwrite): Likewise.
* libio/iogetdelim.c (_IO_getdelim): Likewise.
* libio/iogets.c (_IO_gets): Likewise.
* libio/iopadn.c (_IO_padn): Likewise.
* libio/iopopen.c (_IO_new_proc_open): Likewise.
(_IO_new_popen): Likewise.
(_IO_new_proc_close): Likewise.
* libio/ioputs.c (_IO_puts): Likewise.
* libio/ioseekoff.c (_IO_seekoff_unlocked): Likewise.
(_IO_seekoff): Likewise.
* libio/ioseekpos.c (_IO_seekpos_unlocked): Likewise.
(_IO_seekpos): Likewise.
* libio/iosetbuffer.c (_IO_setbuffer): Likewise.
* libio/iosetvbuf.c (_IO_setvbuf): Likewise.
* libio/ioungetc.c (_IO_ungetc): Likewise.
* libio/ioungetwc.c (ungetwc): Likewise.
* libio/iovdprintf.c (_IO_vdprintf): Likewise.
* libio/iovsscanf.c (_IO_vsscanf): Likewise.
* libio/iowpadn.c (_IO_wpadn): Likewise.
* libio/libc_fatal.c (__libc_fatal): Likewise.
* libio/memstream.c (__open_memstream): Likewise.
(_IO_mem_sync): Likewise.
(_IO_mem_finish): Likewise.
* libio/oldfileops.c (_IO_old_file_init): Likewise.
(_IO_old_file_close_it): Likewise.
(_IO_old_file_finish): Likewise.
(_IO_old_file_fopen): Likewise.
(_IO_old_file_attach): Likewise.
(_IO_old_file_setbuf): Likewise.
(_IO_old_do_write): Likewise.
(old_do_write): Likewise.
(_IO_old_file_underflow): Likewise.
(_IO_old_file_overflow): Likewise.
(_IO_old_file_sync): Likewise.
(_IO_old_file_seekoff): Likewise.
(_IO_old_file_write): Likewise.
(_IO_old_file_xsputn): Likewise.
* libio/oldiofclose.c (_IO_old_fclose): Likewise.
* libio/oldiofdopen.c (_IO_old_fdopen): Likewise.
* libio/oldiofgetpos.c (_IO_old_fgetpos): Likewise.
* libio/oldiofgetpos64.c (_IO_old_fgetpos64): Likewise.
* libio/oldiofopen.c (_IO_old_fopen): Likewise.
* libio/oldiofsetpos.c (_IO_old_fsetpos): Likewise.
* libio/oldiofsetpos64.c (_IO_old_fsetpos64): Likewise.
* libio/oldiopopen.c (_IO_old_proc_open): Likewise.
(_IO_old_popen): Likewise.
(_IO_old_proc_close): Likewise.
* libio/oldpclose.c (__old_pclose): Likewise.
* libio/pclose.c (__new_pclose): Likewise.
* libio/peekc.c (_IO_peekc_locked): Likewise.
* libio/putc.c (_IO_putc): Likewise.
* libio/putc_u.c (putc_unlocked): Likewise.
* libio/putchar.c (putchar): Likewise.
* libio/putchar_u.c (putchar_unlocked): Likewise.
* libio/putwc.c (putwc): Likewise.
* libio/putwc_u.c (putwc_unlocked): Likewise.
* libio/putwchar.c (putwchar): Likewise.
* libio/putwchar_u.c (putwchar_unlocked): Likewise.
* libio/rewind.c (rewind): Likewise.
* libio/setbuf.c (setbuf): Likewise.
* libio/setlinebuf.c (setlinebuf): Likewise.
* libio/vasprintf.c (_IO_vasprintf): Likewise.
* libio/vscanf.c (_IO_vscanf): Likewise.
* libio/vsnprintf.c (_IO_strn_overflow): Likewise.
* libio/vswprintf.c (_IO_wstrn_overflow): Likewise.
* libio/wfiledoalloc.c (_IO_wfile_doallocate): Likewise.
* libio/wgenops.c (_IO_least_wmarker): Likewise.
(_IO_switch_to_main_wget_area): Likewise.
(_IO_switch_to_wbackup_area): Likewise.
(_IO_wsetb): Likewise.
(_IO_wdefault_pbackfail): Likewise.
(_IO_wdefault_finish): Likewise.
(_IO_wdefault_uflow): Likewise.
(__woverflow): Likewise.
(__wuflow): Likewise.
(__wunderflow): Likewise.
(_IO_wdefault_xsputn): Likewise.
(_IO_wdefault_xsgetn): Likewise.
(_IO_wdoallocbuf): Likewise.
(_IO_wdefault_doallocate): Likewise.
(_IO_switch_to_wget_mode): Likewise.
(_IO_free_wbackup_area): Likewise.
(_IO_switch_to_wput_mode): Likewise.
(_IO_sputbackwc): Likewise.
(_IO_sungetwc): Likewise.
(_IO_adjust_wcolumn): Likewise.
(_IO_init_wmarker): Likewise.
(_IO_wmarker_delta): Likewise.
(_IO_seekwmark): Likewise.
(_IO_unsave_wmarkers): Likewise.
* libio/wmemstream.c (open_wmemstream): Likewise.
(_IO_wmem_sync): Likewise.
(_IO_wmem_finish): Likewise.
* locale/nl_langinfo.c (nl_langinfo): Likewise.
* locale/nl_langinfo_l.c (__nl_langinfo_l): Likewise.
* locale/programs/simple-hash.c (init_hash): Likewise.
(delete_hash): Likewise.
(insert_entry): Likewise.
(set_entry): Likewise.
(next_prime): Likewise.
(is_prime): Likewise.
* locale/programs/xmalloc.c (fixup_null_alloc): Likewise.
(xmalloc): Likewise.
(xrealloc): Likewise.
* locale/programs/xstrdup.c (xstrdup): Likewise.
* localedata/collate-test.c (xstrcoll): Likewise.
* localedata/xfrm-test.c (xstrcmp): Likewise.
* login/getlogin_r.c (__getlogin_r): Likewise.
* login/getpt.c (__posix_openpt): Likewise.
* login/login_tty.c (login_tty): Likewise.
* login/setlogin.c (setlogin): Likewise.
* mach/msg-destroy.c (__mach_msg_destroy): Likewise.
(mach_msg_destroy_port): Likewise.
(mach_msg_destroy_memory): Likewise.
* malloc/mcheck.c (flood): Likewise.
* misc/acct.c (acct): Likewise.
* misc/brk.c (__brk): Likewise.
* misc/chflags.c (chflags): Likewise.
* misc/chroot.c (chroot): Likewise.
* misc/fchflags.c (fchflags): Likewise.
* misc/fstab.c (getfsspec): Likewise.
(getfsfile): Likewise.
* misc/fsync.c (fsync): Likewise.
* misc/ftruncate.c (__ftruncate): Likewise.
* misc/ftruncate64.c (__ftruncate64): Likewise.
* misc/getdomain.c (getdomainname): Likewise.
(getdomainname): Likewise.
* misc/gethostname.c (__gethostname): Likewise.
* misc/getpass.c (getpass): Likewise.
* misc/getttyent.c (skip): Likewise.
(value): Likewise.
* misc/gtty.c (gtty): Likewise.
* misc/hsearch.c (hsearch): Likewise.
(hcreate): Likewise.
* misc/hsearch_r.c (__hcreate_r): Likewise.
(__hdestroy_r): Likewise.
* misc/ioctl.c (__ioctl): Likewise.
* misc/mkdtemp.c (mkdtemp): Likewise.
* misc/mkostemp.c (mkostemp): Likewise.
* misc/mkostemp64.c (mkostemp64): Likewise.
* misc/mkostemps.c (mkostemps): Likewise.
* misc/mkostemps64.c (mkostemps64): Likewise.
* misc/mkstemp.c (mkstemp): Likewise.
* misc/mkstemp64.c (mkstemp64): Likewise.
* misc/mkstemps.c (mkstemps): Likewise.
* misc/mkstemps64.c (mkstemps64): Likewise.
* misc/mktemp.c (__mktemp): Likewise.
* misc/preadv.c (preadv): Likewise.
* misc/preadv64.c (preadv64): Likewise.
* misc/pwritev.c (pwritev): Likewise.
* misc/pwritev64.c (pwritev64): Likewise.
* misc/readv.c (__readv): Likewise.
* misc/revoke.c (revoke): Likewise.
* misc/setdomain.c (setdomainname): Likewise.
* misc/setegid.c (setegid): Likewise.
* misc/seteuid.c (seteuid): Likewise.
* misc/sethostid.c (sethostid): Likewise.
* misc/sethostname.c (sethostname): Likewise.
* misc/setregid.c (__setregid): Likewise.
* misc/setreuid.c (__setreuid): Likewise.
* misc/sstk.c (sstk): Likewise.
* misc/stty.c (stty): Likewise.
* misc/syscall.c (syscall): Likewise.
* misc/syslog.c (setlogmask): Likewise.
* misc/truncate.c (__truncate): Likewise.
* misc/truncate64.c (truncate64): Likewise.
* misc/ualarm.c (ualarm): Likewise.
* misc/usleep.c (usleep): Likewise.
* misc/ustat.c (ustat): Likewise.
* misc/writev.c (__writev): Likewise.
* nptl/cleanup_compat.c (_pthread_cleanup_pop): Likewise.
* nptl/old_pthread_cond_broadcast.c
(__pthread_cond_broadcast_2_0): Likewise.
* nptl/old_pthread_cond_destroy.c (__pthread_cond_destroy_2_0):
Likewise.
* nptl/old_pthread_cond_signal.c (__pthread_cond_signal_2_0):
Likewise.
* nptl/old_pthread_cond_wait.c (__pthread_cond_wait_2_0):
Likewise.
* nptl/pt-raise.c (raise): Likewise.
* nptl/pthread_barrier_destroy.c (pthread_barrier_destroy):
Likewise.
* nptl/pthread_barrier_wait.c (__pthread_barrier_wait): Likewise.
* nptl/pthread_barrierattr_destroy.c
(pthread_barrierattr_destroy): Likewise.
* nptl/pthread_barrierattr_init.c (pthread_barrierattr_init):
Likewise.
* nptl/pthread_barrierattr_setpshared.c
(pthread_barrierattr_setpshared): Likewise.
* nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast):
Likewise.
* nptl/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise.
* nptl/pthread_cond_init.c (__pthread_cond_init): Likewise.
* nptl/pthread_cond_signal.c (__pthread_cond_signal): Likewise.
* nptl/pthread_condattr_destroy.c (__pthread_condattr_destroy):
Likewise.
* nptl/pthread_condattr_getclock.c (pthread_condattr_getclock):
Likewise.
* nptl/pthread_condattr_getpshared.c
(pthread_condattr_getpshared): Likewise.
* nptl/pthread_condattr_init.c (__pthread_condattr_init):
Likewise.
* nptl/pthread_condattr_setpshared.c
(pthread_condattr_setpshared): Likewise.
* nptl/pthread_detach.c (pthread_detach): Likewise.
* nptl/pthread_equal.c (__pthread_equal): Likewise.
* nptl/pthread_getcpuclockid.c (pthread_getcpuclockid): Likewise.
* nptl/pthread_getspecific.c (__pthread_getspecific): Likewise.
* nptl/pthread_key_delete.c (pthread_key_delete): Likewise.
* nptl/pthread_mutex_consistent.c (pthread_mutex_consistent):
Likewise.
* nptl/pthread_mutex_destroy.c (__pthread_mutex_destroy):
Likewise.
* nptl/pthread_mutex_getprioceiling.c
(pthread_mutex_getprioceiling): Likewise.
* nptl/pthread_mutexattr_destroy.c (__pthread_mutexattr_destroy):
Likewise.
* nptl/pthread_mutexattr_getprotocol.c
(pthread_mutexattr_getprotocol): Likewise.
* nptl/pthread_mutexattr_getpshared.c
(pthread_mutexattr_getpshared): Likewise.
* nptl/pthread_mutexattr_getrobust.c
(pthread_mutexattr_getrobust): Likewise.
* nptl/pthread_mutexattr_gettype.c (pthread_mutexattr_gettype):
Likewise.
* nptl/pthread_mutexattr_init.c (__pthread_mutexattr_init):
Likewise.
* nptl/pthread_mutexattr_setprioceiling.c
(pthread_mutexattr_setprioceiling): Likewise.
* nptl/pthread_mutexattr_setprotocol.c
(pthread_mutexattr_setprotocol): Likewise.
* nptl/pthread_mutexattr_setpshared.c
(pthread_mutexattr_setpshared): Likewise.
* nptl/pthread_mutexattr_setrobust.c
(pthread_mutexattr_setrobust): Likewise.
* nptl/pthread_mutexattr_settype.c (__pthread_mutexattr_settype):
Likewise.
* nptl/pthread_rwlock_destroy.c (__pthread_rwlock_destroy):
Likewise.
* nptl/pthread_rwlockattr_destroy.c (pthread_rwlockattr_destroy):
Likewise.
* nptl/pthread_rwlockattr_getkind_np.c
(pthread_rwlockattr_getkind_np): Likewise.
* nptl/pthread_rwlockattr_getpshared.c
(pthread_rwlockattr_getpshared): Likewise.
* nptl/pthread_rwlockattr_init.c (pthread_rwlockattr_init):
Likewise.
* nptl/pthread_rwlockattr_setkind_np.c
(pthread_rwlockattr_setkind_np): Likewise.
* nptl/pthread_rwlockattr_setpshared.c
(pthread_rwlockattr_setpshared): Likewise.
* nptl/pthread_setcancelstate.c (__pthread_setcancelstate):
Likewise.
* nptl/pthread_setcanceltype.c (__pthread_setcanceltype):
Likewise.
* nptl/pthread_setconcurrency.c (pthread_setconcurrency):
Likewise.
* nptl/pthread_setschedprio.c (pthread_setschedprio): Likewise.
* nptl/pthread_setspecific.c (__pthread_setspecific): Likewise.
* nptl/pthread_spin_destroy.c (pthread_spin_destroy): Likewise.
* nptl/pthread_tryjoin.c (pthread_tryjoin_np): Likewise.
* nptl/sem_close.c (sem_close): Likewise.
* nptl/sem_destroy.c (__new_sem_destroy): Likewise.
* nptl/sem_init.c (__old_sem_init): Likewise.
* nptl/sigaction.c (__sigaction): Likewise.
* nptl/unregister-atfork.c (__unregister_atfork): Likewise.
* posix/_exit.c (_exit): Likewise.
* posix/alarm.c (alarm): Likewise.
* posix/confstr.c (confstr): Likewise.
* posix/fpathconf.c (__fpathconf): Likewise.
* posix/getgroups.c (__getgroups): Likewise.
* posix/getpgid.c (__getpgid): Likewise.
* posix/group_member.c (__group_member): Likewise.
* posix/pathconf.c (__pathconf): Likewise.
* posix/sched_getaffinity.c (sched_getaffinity): Likewise.
* posix/sched_setaffinity.c (sched_setaffinity): Likewise.
* posix/setgid.c (__setgid): Likewise.
* posix/setpgid.c (__setpgid): Likewise.
* posix/setuid.c (__setuid): Likewise.
* posix/sleep.c (__sleep): Likewise.
* posix/sysconf.c (__sysconf): Likewise.
* posix/times.c (__times): Likewise.
* posix/uname.c (__uname): Likewise.
* posix/waitid.c (__waitid): Likewise.
* pwd/getpw.c (__getpw): Likewise.
* resolv/base64.c (b64_pton): Likewise.
* resolv/gai_sigqueue.c (__gai_sigqueue): Likewise.
* resolv/gethnamaddr.c (Dprintf): Likewise.
(gethostbyname): Likewise.
(gethostbyname2): Likewise.
(gethostbyaddr): Likewise.
(_sethtent): Likewise.
(_gethtbyname): Likewise.
(_gethtbyname2): Likewise.
(_gethtbyaddr): Likewise.
(map_v4v6_address): Likewise.
(map_v4v6_hostent): Likewise.
(addrsort): Likewise.
(ht_sethostent): Likewise.
(ht_gethostbyname): Likewise.
(ht_gethostbyaddr): Likewise.
* resolv/inet_net_ntop.c (inet_net_ntop): Likewise.
(inet_net_ntop_ipv4): Likewise.
* resolv/inet_neta.c (inet_neta): Likewise.
* resolv/inet_ntop.c (inet_ntop): Likewise.
(inet_ntop4): Likewise.
(inet_ntop6): Likewise.
* resolv/inet_pton.c (__inet_pton): Likewise.
(inet_pton4): Likewise.
(inet_pton6): Likewise.
* resolv/res_debug.c (loc_aton): Likewise.
(loc_ntoa): Likewise.
* resource/getpriority.c (__getpriority): Likewise.
* resource/getrusage.c (__getrusage): Likewise.
* resource/nice.c (nice): Likewise.
* resource/setpriority.c (__setpriority): Likewise.
* resource/setrlimit64.c (setrlimit64): Likewise.
* resource/vlimit.c (vlimit): Likewise.
* resource/vtimes.c (vtimes): Likewise.
* rt/aio_error.c (aio_error): Likewise.
* rt/aio_return.c (aio_return): Likewise.
* rt/aio_sigqueue.c (__aio_sigqueue): Likewise.
* signal/kill.c (__kill): Likewise.
* signal/killpg.c (killpg): Likewise.
* signal/raise.c (raise): Likewise.
* signal/sigaction.c (__sigaction): Likewise.
* signal/sigaddset.c (sigaddset): Likewise.
* signal/sigaltstack.c (sigaltstack): Likewise.
* signal/sigandset.c (sigandset): Likewise.
* signal/sigblock.c (__sigblock): Likewise.
* signal/sigdelset.c (sigdelset): Likewise.
* signal/sigempty.c (sigemptyset): Likewise.
* signal/sigfillset.c (sigfillset): Likewise.
* signal/sighold.c (sighold): Likewise.
* signal/sigignore.c (sigignore): Likewise.
* signal/sigintr.c (siginterrupt): Likewise.
* signal/sigisempty.c (sigisemptyset): Likewise.
* signal/sigismem.c (sigismember): Likewise.
* signal/signal.c (signal): Likewise.
* signal/sigorset.c (sigorset): Likewise.
* signal/sigpause.c (__sigpause): Likewise.
* signal/sigpending.c (sigpending): Likewise.
* signal/sigprocmask.c (__sigprocmask): Likewise.
* signal/sigrelse.c (sigrelse): Likewise.
* signal/sigreturn.c (__sigreturn): Likewise.
* signal/sigset.c (sigset): Likewise.
* signal/sigsetmask.c (__sigsetmask): Likewise.
* signal/sigstack.c (sigstack): Likewise.
* signal/sigsuspend.c (__sigsuspend): Likewise.
* signal/sigvec.c (sigvec_wrapper_handler): Likewise.
* signal/sysv_signal.c (__sysv_signal): Likewise.
* socket/accept.c (accept): Likewise.
* socket/accept4.c (__libc_accept4): Likewise.
* socket/bind.c (__bind): Likewise.
* socket/connect.c (__connect): Likewise.
* socket/getpeername.c (getpeername): Likewise.
* socket/getsockname.c (__getsockname): Likewise.
* socket/getsockopt.c (getsockopt): Likewise.
* socket/listen.c (__listen): Likewise.
* socket/recv.c (__recv): Likewise.
* socket/recvmsg.c (__recvmsg): Likewise.
* socket/send.c (__send): Likewise.
* socket/sendmsg.c (__sendmsg): Likewise.
* socket/shutdown.c (shutdown): Likewise.
* socket/sockatmark.c (sockatmark): Likewise.
* socket/socket.c (__socket): Likewise.
* stdio-common/ctermid.c (ctermid): Likewise.
* stdio-common/cuserid.c (cuserid): Likewise.
* stdio-common/printf-prs.c (parse_printf_format): Likewise.
* stdio-common/remove.c (remove): Likewise.
* stdio-common/rename.c (rename): Likewise.
* stdio-common/renameat.c (renameat): Likewise.
* stdio-common/tempname.c (__gen_tempname): Likewise.
* stdio-common/xbug.c (InitBuffer): Likewise.
(AppendToBuffer): Likewise.
(ReadFile): Likewise.
* stdlib/a64l.c (a64l): Likewise.
* stdlib/drand48_r.c (drand48_r): Likewise.
* stdlib/getcontext.c (getcontext): Likewise.
* stdlib/getenv.c (getenv): Likewise.
* stdlib/l64a.c (l64a): Likewise.
* stdlib/llabs.c (llabs): Likewise.
* stdlib/lldiv.c (lldiv): Likewise.
* stdlib/lrand48_r.c (lrand48_r): Likewise.
* stdlib/mrand48_r.c (mrand48_r): Likewise.
* stdlib/putenv.c (putenv): Likewise.
* stdlib/random.c (__srandom): Likewise.
(__initstate): Likewise.
(__setstate): Likewise.
* stdlib/random_r.c (__srandom_r): Likewise.
(__setstate_r): Likewise.
(__random_r): Likewise.
* stdlib/secure-getenv.c (__libc_secure_getenv): Likewise.
* stdlib/setcontext.c (setcontext): Likewise.
* stdlib/setenv.c (setenv): Likewise.
(unsetenv): Likewise.
* stdlib/srand48.c (srand48): Likewise.
* stdlib/srand48_r.c (__srand48_r): Likewise.
* stdlib/swapcontext.c (swapcontext): Likewise.
* stdlib/system.c (__libc_system): Likewise.
* stdlib/tst-strtod.c (expand): Likewise.
* stdlib/tst-strtol.c (expand): Likewise.
* stdlib/tst-strtoll.c (expand): Likewise.
* streams/fattach.c (fattach): Likewise.
* streams/fdetach.c (fdetach): Likewise.
* streams/getmsg.c (getmsg): Likewise.
* streams/isastream.c (isastream): Likewise.
* string/ffs.c (__ffs): Likewise.
* string/ffsll.c (ffsll): Likewise.
* string/memcmp.c (memcmp_common_alignment): Likewise.
(memcmp_not_common_alignment): Likewise.
(MEMCMP): Likewise.
* string/memcpy.c (memcpy): Likewise.
* string/memmove.c (MEMMOVE): Likewise.
* string/memset.c (memset): Likewise.
* string/rawmemchr.c (RAWMEMCHR): Likewise.
* string/strchrnul.c (STRCHRNUL): Likewise.
* string/strerror.c (strerror): Likewise.
* string/strndup.c (__strndup): Likewise.
* string/strverscmp.c (__strverscmp): Likewise.
* sunrpc/clnt_raw.c (clntraw_freeres): Likewise.
* sunrpc/clnt_tcp.c (clnttcp_geterr): Likewise.
(clnttcp_freeres): Likewise.
* sunrpc/clnt_unix.c (clntunix_freeres): Likewise.
* sunrpc/pmap_prot.c (xdr_pmap): Likewise.
* sunrpc/pmap_prot2.c (xdr_pmaplist): Likewise.
* sunrpc/pmap_rmt.c (xdr_rmtcallres): Likewise.
* sunrpc/rpc_prot.c (xdr_replymsg): Likewise.
(xdr_callhdr): Likewise.
* sunrpc/rpcinfo.c (udpping): Likewise.
(tcpping): Likewise.
(pstatus): Likewise.
(pmapdump): Likewise.
(brdcst): Likewise.
(deletereg): Likewise.
(getprognum): Likewise.
(getvers): Likewise.
(get_inet_address): Likewise.
* sunrpc/svc_raw.c (svcraw_recv): Likewise.
* sunrpc/svc_udp.c (svcudp_create): Likewise.
(svcudp_stat): Likewise.
(svcudp_recv): Likewise.
(svcudp_reply): Likewise.
(svcudp_getargs): Likewise.
(svcudp_freeargs): Likewise.
(svcudp_destroy): Likewise.
* sunrpc/xdr.c (xdr_bytes): Likewise.
(xdr_netobj): Likewise.
(xdr_string): Likewise.
(xdr_wrapstring): Likewise.
* sunrpc/xdr_float.c (xdr_float): Likewise.
(xdr_double): Likewise.
* sunrpc/xdr_mem.c (xdrmem_setpos): Likewise.
* sunrpc/xdr_ref.c (xdr_pointer): Likewise.
* sysvipc/ftok.c (ftok): Likewise.
* sysvipc/msgctl.c (msgctl): Likewise.
* sysvipc/msgget.c (msgget): Likewise.
* sysvipc/msgrcv.c (msgrcv): Likewise.
* sysvipc/msgsnd.c (msgsnd): Likewise.
* sysvipc/semget.c (semget): Likewise.
* sysvipc/semop.c (semop): Likewise.
* sysvipc/shmat.c (shmat): Likewise.
* sysvipc/shmctl.c (shmctl): Likewise.
* sysvipc/shmdt.c (shmdt): Likewise.
* sysvipc/shmget.c (shmget): Likewise.
* termios/cfmakeraw.c (cfmakeraw): Likewise.
* termios/speed.c (cfgetospeed): Likewise.
(cfgetispeed): Likewise.
(cfsetospeed): Likewise.
(cfsetispeed): Likewise.
* termios/tcflow.c (tcflow): Likewise.
* termios/tcflush.c (tcflush): Likewise.
* termios/tcgetattr.c (__tcgetattr): Likewise.
* termios/tcgetpgrp.c (tcgetpgrp): Likewise.
* termios/tcgetsid.c (tcgetsid): Likewise.
* termios/tcsendbrk.c (tcsendbreak): Likewise.
* termios/tcsetpgrp.c (tcsetpgrp): Likewise.
* time/adjtime.c (__adjtime): Likewise.
* time/dysize.c (dysize): Likewise.
* time/ftime.c (ftime): Likewise.
* time/getitimer.c (__getitimer): Likewise.
* time/gettimeofday.c (__gettimeofday): Likewise.
* time/gmtime.c (__gmtime_r): Likewise.
(gmtime): Likewise.
* time/localtime.c (__localtime_r): Likewise.
(localtime): Likewise.
* time/offtime.c (__offtime): Likewise.
* time/settimeofday.c (__settimeofday): Likewise.
* time/stime.c (stime): Likewise.
* time/strftime_l.c (tm_diff): Likewise.
(iso_week_days): Likewise.
* time/strptime.c (strptime): Likewise.
* time/time.c (time): Likewise.
* time/timespec_get.c (timespec_get): Likewise.
* time/tzset.c (tzset_internal): Likewise.
(compute_change): Likewise.
(__tz_compute): Likewise.
* wcsmbs/btowc.c (__btowc): Likewise.
* wcsmbs/mbrlen.c (__mbrlen): Likewise.
* wcsmbs/mbsinit.c (__mbsinit): Likewise.
* wcsmbs/mbsrtowcs.c (__mbsrtowcs): Likewise.
* wcsmbs/wcpcpy.c (__wcpcpy): Likewise.
* wcsmbs/wcpncpy.c (__wcpncpy): Likewise.
* wcsmbs/wcscat.c (__wcscat): Likewise.
* wcsmbs/wcschrnul.c (__wcschrnul): Likewise.
* wcsmbs/wcscmp.c (WCSCMP): Likewise.
* wcsmbs/wcscpy.c (WCSCPY): Likewise.
* wcsmbs/wcscspn.c (wcscspn): Likewise.
* wcsmbs/wcsdup.c (wcsdup): Likewise.
* wcsmbs/wcslen.c (__wcslen): Likewise.
* wcsmbs/wcsncat.c (WCSNCAT): Likewise.
* wcsmbs/wcsncmp.c (WCSNCMP): Likewise.
* wcsmbs/wcsncpy.c (__wcsncpy): Likewise.
* wcsmbs/wcsnlen.c (__wcsnlen): Likewise.
* wcsmbs/wcspbrk.c (wcspbrk): Likewise.
* wcsmbs/wcsrchr.c (WCSRCHR): Likewise.
* wcsmbs/wcsspn.c (wcsspn): Likewise.
* wcsmbs/wcsstr.c (wcsstr): Likewise.
* wcsmbs/wcstok.c (wcstok): Likewise.
* wcsmbs/wctob.c (wctob): Likewise.
* wcsmbs/wmemchr.c (__wmemchr): Likewise.
* wcsmbs/wmemcmp.c (WMEMCMP): Likewise.
* wcsmbs/wmemcpy.c (__wmemcpy): Likewise.
* wcsmbs/wmemmove.c (__wmemmove): Likewise.
* wcsmbs/wmempcpy.c (__wmempcpy): Likewise.
* wcsmbs/wmemset.c (__wmemset): Likewise.
* wctype/wcfuncs.c (__towlower): Likewise.
(__towupper): Likewise.
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fdopen should only be allowed to change the offset in the file it
attaches to if it is setting O_APPEND. If O_APPEND is already set, it
should not change the state of the handle.
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The ftell implementation was made conservative to ensure that
incorrectly cached offsets never affect it. However, this causes
problems for append mode when a file stream is rewound. Additionally,
the 'clever' trick of using stat to get position for append mode files
caused more problems than it solved and broke old behavior. I have
described the various problems that it caused and then finally the
solution.
For a and a+ mode files, rewinding the stream should result in ftell
returning 0 as the offset, but the stat() trick caused it to
(incorrectly) always return the end of file. Now I couldn't find
anything in POSIX that specifies the stream position after rewind()
for a file opened in 'a' mode, but for 'a+' mode it should be set to
0. For 'a' mode too, it probably makes sense to keep it set to 0 in
the interest of retaining old behavior.
The initial file position for append mode files is implementation
defined, so the implementation could either retain the current file
position or move the position to the end of file. The earlier ftell
implementation would move the offset to end of file for append-only
mode, but retain the old offset for a+ mode. It would also cache the
offset (this detail is important). My patch broke this and would set
the initial position to end of file for both append modes, thus
breaking old behavior. I was ignorant enough to write an incorrect
test case for it too.
The Change:
I have now brought back the behavior of seeking to end of file for
append-only streams, but with a slight difference. I don't cache the
offset though, since we would want ftell to query the current file
position through lseek while the stream is not active. Since the
offset is moved to the end of file, we can rely on the file position
reported by lseek and we don't need to resort to the stat() nonsense.
Finally, the cache is always reliable, except when there are unflished
writes in an append mode stream (i.e. both a and a+). In the latter
case, it is safe to just do an lseek to SEEK_END. The value can be
safely cached too, since the file handle is already active at this
point. Incidentally, this is the only state change we affect in the
file handle (apart from taking locks of course).
I have also updated the test case to correct my impression of the
initial file position for a+ streams to the initial behavior. I have
verified that this does not break any existing tests in the testsuite
and also passes with the new tests.
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The cached offset is reliable to use in ftell when the stream handle
is active. We can consider a stream as being active when there is
unflushed data. However, even in this case, we can use the cached
offset only when the stream is not being written to in a+ mode,
because this case may have unflushed data and a stale offset; the
previous read could have sent it off somewhere other than the end of
the file.
There were a couple of adjustments necessary to get this to work.
Firstly, fdopen now ceases to use _IO_attach_fd because it sets the
offset cache to the current file position. This is not correct
because there could be changes to the file descriptor before the
stream handle is activated, which would not get reflected.
A similar offset caching action is done in _IO_fwide, claiming that
wide streams have 'problems' with the file offsets. There don't seem
to be any obvious problems with not having the offset cache available,
other than that it will have to be queried in a subsequent
read/write/seek. I have removed this as well.
The testsuite passes successfully with these changes on x86_64.
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header lines and write out foo.symlist files for each foo.so |
