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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2018-04-04 11:24:15 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2018-06-26 13:22:53 -0300 |
commit | 06ab719d30b01da401150068054d3b8ea93dd12f (patch) | |
tree | 3a5204a151219d410caf2cc43afcec5bce19d54b /sysdeps/unix/sysv/linux | |
parent | 124e025864bb39732c71fc60c1443d5680881a0a (diff) | |
download | glibc-06ab719d30b01da401150068054d3b8ea93dd12f.tar.gz glibc-06ab719d30b01da401150068054d3b8ea93dd12f.tar.xz glibc-06ab719d30b01da401150068054d3b8ea93dd12f.zip |
Fix Linux fcntl OFD locks for non-LFS architectures (BZ#20251)
This patch fixes the OFD ("file private") locks for architectures that support non-LFS flock definition (__USE_FILE_OFFSET64 not defined). The issue in this case is both F_OFD_{GETLK,SETLK,SETLKW} and F_{SET,GET}L{W}K64 expects a flock64 argument and when using old F_OFD_* flags with a non LFS flock argument the kernel might interpret the underlying data wrongly. Kernel idea originally was to avoid using such flags in non-LFS syscall, but since GLIBC uses fcntl with LFS semantic as default it is possible to provide the functionality and avoid the bogus struct kernel passing by adjusting the struct manually for the required flags. The idea follows other LFS interfaces that provide two symbols: 1. A new LFS fcntl64 is added on default ABI with the usual macros to select it for FILE_OFFSET_BITS=64. 2. The Linux non-LFS fcntl use a stack allocated struct flock64 for F_OFD_{GETLK,SETLK,SETLKW} copy the results on the user provided struct. 3. Keep a compat symbol with old broken semantic for architectures that do not define __OFF_T_MATCHES_OFF64_T. So for architectures which defines __USE_FILE_OFFSET64, fcntl64 will aliased to fcntl and no adjustment would be required. So to actually use F_OFD_* with LFS support the source must be built with LFS support (_FILE_OFFSET_BITS=64). Also F_OFD_SETLKW command is handled a cancellation point, as for F_SETLKW{64}. Checked on x86_64-linux-gnu and i686-linux-gnu. [BZ #20251] * NEWS: Mention fcntl64 addition. * csu/check_fds.c: Replace __fcntl_nocancel by __fcntl64_nocancel. * login/utmp_file.c: Likewise. * sysdeps/posix/fdopendir.c: Likewise. * sysdeps/posix/opendir.c: Likewise. * sysdeps/unix/pt-fcntl.c: Likewise. * include/fcntl.h (__libc_fcntl64, __fcntl64, __fcntl64_nocancel_adjusted): New prototype. (__fcntl_nocancel_adjusted): Remove prototype. * io/Makefile (routines): Add fcntl64. (CFLAGS-fcntl64.c): New rule. * io/Versions [GLIBC_2.28] (fcntl64): New symbol. [GLIBC_PRIVATE] (__libc_fcntl): Rename to __libc_fcntl64. * io/fcntl.h (fcntl64): Add prototype and redirect if __USE_FILE_OFFSET64 is defined. * io/fcntl64.c: New file. * manual/llio.text: Add a note for which commands fcntl acts a cancellation point. * nptl/Makefile (CFLAGS-fcntl64.c): New rule. * sysdeps/mach/hurd/fcntl.c: Alias fcntl to fcntl64 symbols. * sysdeps/mach/hurd/i386/libc.abilist [GLIBC_2.28] (fcntl, fcntl64): New symbols. * sysdeps/unix/sysv/linux/fcntl.c (__libc_fcntl): Fix F_GETLK64, F_OFD_GETLK, F_SETLK64, F_SETLKW64, F_OFD_SETLK, and F_OFD_SETLKW for non-LFS case. * sysdeps/unix/sysv/linux/fcntl64.c: New file. * sysdeps/unix/sysv/linux/fcntl_nocancel.c (__fcntl_nocancel): Rename to __fcntl64_nocancel. (__fcntl_nocancel_adjusted): Rename to __fcntl64_nocancel_adjusted. * sysdeps/unix/sysv/linux/not-cancel.h (__fcntl_nocancel): Rename to __fcntl64_nocancel. * sysdeps/unix/sysv/linux/tst-ofdlocks.c: New file. * sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c: Likewise. * sysdeps/unix/sysv/linux/Makefile (tests): Add tst-ofdlocks. (tests-internal): Add tst-ofdlocks-compat. * sysdeps/unix/sysv/linux/aarch64/libc.abilist [GLIBC_2.28] (fcntl64): New symbol. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libc.abilist [GLIBC_2.28] (fcntl, fcntl64): Likewise. * sysdeps/unix/sysv/linux/hppa/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilis: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise.
Diffstat (limited to 'sysdeps/unix/sysv/linux')
33 files changed, 352 insertions, 18 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index 215fd5d136..f71cc39c7e 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -45,7 +45,9 @@ sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h \ tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \ tst-quota tst-sync_file_range tst-sysconf-iov_max tst-ttyname \ test-errno-linux tst-memfd_create tst-mlock2 tst-pkey \ - tst-rlimit-infinity + tst-rlimit-infinity tst-ofdlocks +tests-internal += tst-ofdlocks-compat + # Generate the list of SYS_* macros for the system calls (__NR_* # macros). The file syscall-names.list contains all possible system diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist index 80cdb98e1c..884d0dfa95 100644 --- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist +++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist @@ -2131,3 +2131,4 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist index c761f61c43..28d54b9794 100644 --- a/sysdeps/unix/sysv/linux/alpha/libc.abilist +++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist @@ -2026,6 +2026,7 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/arm/libc.abilist b/sysdeps/unix/sysv/linux/arm/libc.abilist index 6aa58c3ca7..dfde3bd725 100644 --- a/sysdeps/unix/sysv/linux/arm/libc.abilist +++ b/sysdeps/unix/sysv/linux/arm/libc.abilist @@ -115,6 +115,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.4 _Exit F GLIBC_2.4 _IO_2_1_stderr_ D 0xa0 GLIBC_2.4 _IO_2_1_stdin_ D 0xa0 diff --git a/sysdeps/unix/sysv/linux/fcntl.c b/sysdeps/unix/sysv/linux/fcntl.c index e3992dc9d4..cbab7b401a 100644 --- a/sysdeps/unix/sysv/linux/fcntl.c +++ b/sysdeps/unix/sysv/linux/fcntl.c @@ -20,15 +20,12 @@ #include <stdarg.h> #include <errno.h> #include <sysdep-cancel.h> -#include <not-cancel.h> -#ifndef __NR_fcntl64 -# define __NR_fcntl64 __NR_fcntl -#endif +#ifndef __OFF_T_MATCHES_OFF64_T -#ifndef FCNTL_ADJUST_CMD -# define FCNTL_ADJUST_CMD(__cmd) __cmd -#endif +# ifndef FCNTL_ADJUST_CMD +# define FCNTL_ADJUST_CMD(__cmd) __cmd +# endif int __libc_fcntl (int fd, int cmd, ...) @@ -42,13 +39,84 @@ __libc_fcntl (int fd, int cmd, ...) cmd = FCNTL_ADJUST_CMD (cmd); - if (cmd == F_SETLKW || cmd == F_SETLKW64) - return SYSCALL_CANCEL (fcntl64, fd, cmd, (void *) arg); - - return __fcntl_nocancel_adjusted (fd, cmd, arg); + switch (cmd) + { + case F_SETLKW: + case F_SETLKW64: + return SYSCALL_CANCEL (fcntl64, fd, cmd, arg); + case F_OFD_SETLKW: + { + struct flock *flk = (struct flock *) arg; + struct flock64 flk64 = + { + .l_type = flk->l_type, + .l_whence = flk->l_whence, + .l_start = flk->l_start, + .l_len = flk->l_len, + .l_pid = flk->l_pid + }; + return SYSCALL_CANCEL (fcntl64, fd, cmd, &flk64); + } + case F_OFD_GETLK: + case F_OFD_SETLK: + { + struct flock *flk = (struct flock *) arg; + struct flock64 flk64 = + { + .l_type = flk->l_type, + .l_whence = flk->l_whence, + .l_start = flk->l_start, + .l_len = flk->l_len, + .l_pid = flk->l_pid + }; + int ret = INLINE_SYSCALL_CALL (fcntl64, fd, cmd, &flk64); + if (ret == -1) + return -1; + if ((off_t) flk64.l_start != flk64.l_start + || (off_t) flk64.l_len != flk64.l_len) + { + __set_errno (EOVERFLOW); + return -1; + } + flk->l_type = flk64.l_type; + flk->l_whence = flk64.l_whence; + flk->l_start = flk64.l_start; + flk->l_len = flk64.l_len; + flk->l_pid = flk64.l_pid; + return ret; + } + /* Since only F_SETLKW{64}/F_OLD_SETLK are cancellation entrypoints and + only OFD locks require LFS handling, all others flags are handled + unmodified by calling __NR_fcntl64. */ + default: + return __fcntl64_nocancel_adjusted (fd, cmd, arg); + } } libc_hidden_def (__libc_fcntl) weak_alias (__libc_fcntl, __fcntl) libc_hidden_weak (__fcntl) + +# include <shlib-compat.h> +# if SHLIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_28) +int +__old_libc_fcntl64 (int fd, int cmd, ...) +{ + va_list ap; + void *arg; + + va_start (ap, cmd); + arg = va_arg (ap, void *); + va_end (ap); + + /* Previous versions called __NR_fcntl64 for fcntl (which did not handle + OFD locks in LFS mode). */ + return __libc_fcntl64 (fd, cmd, arg); +} +compat_symbol (libc, __old_libc_fcntl64, fcntl, GLIBC_2_0); +versioned_symbol (libc, __libc_fcntl, fcntl, GLIBC_2_28); +# else weak_alias (__libc_fcntl, fcntl) +# endif + +#endif /* __OFF_T_MATCHES_OFF64_T */ diff --git a/sysdeps/unix/sysv/linux/fcntl64.c b/sysdeps/unix/sysv/linux/fcntl64.c new file mode 100644 index 0000000000..f21667ae43 --- /dev/null +++ b/sysdeps/unix/sysv/linux/fcntl64.c @@ -0,0 +1,63 @@ +/* Manipulate file descriptor. Linux LFS version. + Copyright (C) 2018 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#define fcntl __no_decl_fcntl +#define __fcntl __no_decl___fcntl +#include <fcntl.h> +#undef fcntl +#undef __fcntl +#include <stdarg.h> +#include <errno.h> +#include <sysdep-cancel.h> + +#ifndef __NR_fcntl64 +# define __NR_fcntl64 __NR_fcntl +#endif + +#ifndef FCNTL_ADJUST_CMD +# define FCNTL_ADJUST_CMD(__cmd) __cmd +#endif + +int +__libc_fcntl64 (int fd, int cmd, ...) +{ + va_list ap; + void *arg; + + va_start (ap, cmd); + arg = va_arg (ap, void *); + va_end (ap); + + cmd = FCNTL_ADJUST_CMD (cmd); + + if (cmd == F_SETLKW || cmd == F_SETLKW64 || cmd == F_OFD_SETLKW) + return SYSCALL_CANCEL (fcntl64, fd, cmd, arg); + + return __fcntl64_nocancel_adjusted (fd, cmd, arg); +} +libc_hidden_def (__libc_fcntl64) +weak_alias (__libc_fcntl64, __fcntl64) +libc_hidden_weak (__fcntl64) +weak_alias (__libc_fcntl64, fcntl64) + +#ifdef __OFF_T_MATCHES_OFF64_T +weak_alias (__libc_fcntl64, __libc_fcntl) +weak_alias (__libc_fcntl64, __fcntl) +weak_alias (__libc_fcntl64, __GI___fcntl) +weak_alias (__libc_fcntl64, fcntl) +#endif diff --git a/sysdeps/unix/sysv/linux/fcntl_nocancel.c b/sysdeps/unix/sysv/linux/fcntl_nocancel.c index f50e382c4a..dd336b5679 100644 --- a/sysdeps/unix/sysv/linux/fcntl_nocancel.c +++ b/sysdeps/unix/sysv/linux/fcntl_nocancel.c @@ -31,7 +31,7 @@ #endif int -__fcntl_nocancel (int fd, int cmd, ...) +__fcntl64_nocancel (int fd, int cmd, ...) { va_list ap; void *arg; @@ -42,12 +42,12 @@ __fcntl_nocancel (int fd, int cmd, ...) cmd = FCNTL_ADJUST_CMD (cmd); - return __fcntl_nocancel_adjusted (fd, cmd, arg); + return __fcntl64_nocancel_adjusted (fd, cmd, arg); } -hidden_def (__fcntl_nocancel) +hidden_def (__fcntl64_nocancel) int -__fcntl_nocancel_adjusted (int fd, int cmd, void *arg) +__fcntl64_nocancel_adjusted (int fd, int cmd, void *arg) { if (cmd == F_GETOWN) { diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist index d10695b7d3..06b00f730a 100644 --- a/sysdeps/unix/sysv/linux/hppa/libc.abilist +++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist @@ -1872,6 +1872,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist index 23092ab6d7..1c1cc00d40 100644 --- a/sysdeps/unix/sysv/linux/i386/libc.abilist +++ b/sysdeps/unix/sysv/linux/i386/libc.abilist @@ -2037,6 +2037,8 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist index 7bf259e86c..f6e17a005f 100644 --- a/sysdeps/unix/sysv/linux/ia64/libc.abilist +++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist @@ -1907,6 +1907,7 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist index 4673bcd79b..ee054a618d 100644 --- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist @@ -116,6 +116,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.4 _Exit F GLIBC_2.4 _IO_2_1_stderr_ D 0x98 GLIBC_2.4 _IO_2_1_stdin_ D 0x98 diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist index 1f8ac40399..227a0581cb 100644 --- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist +++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist @@ -1981,6 +1981,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/microblaze/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/libc.abilist index 09277f5954..18781b3017 100644 --- a/sysdeps/unix/sysv/linux/microblaze/libc.abilist +++ b/sysdeps/unix/sysv/linux/microblaze/libc.abilist @@ -2122,3 +2122,5 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist index f562e20f23..2d86989cf2 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist @@ -1959,6 +1959,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist index ceb7388829..b8b113e1a5 100644 --- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist @@ -1957,6 +1957,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist index 5765f487a2..6a3cd13e2d 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist @@ -1965,6 +1965,8 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist index a84bb45a38..596ec05379 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist @@ -1961,6 +1961,7 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist index e43295986c..8da18eed57 100644 --- a/sysdeps/unix/sysv/linux/nios2/libc.abilist +++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist @@ -2163,3 +2163,5 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h index 0b5c955989..09de92dee9 100644 --- a/sysdeps/unix/sysv/linux/not-cancel.h +++ b/sysdeps/unix/sysv/linux/not-cancel.h @@ -76,7 +76,7 @@ __typeof (pause) __pause_nocancel; __typeof (__nanosleep) __nanosleep_nocancel; /* Uncancelable fcntl. */ -__typeof (__fcntl) __fcntl_nocancel; +__typeof (__fcntl) __fcntl64_nocancel; #if IS_IN (libc) || IS_IN (rtld) hidden_proto (__open_nocancel) @@ -89,7 +89,7 @@ hidden_proto (__close_nocancel) hidden_proto (__waitpid_nocancel) hidden_proto (__pause_nocancel) hidden_proto (__nanosleep_nocancel) -hidden_proto (__fcntl_nocancel) +hidden_proto (__fcntl64_nocancel) #endif #endif /* NOT_CANCEL_H */ diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist index a5f2b23068..555751eb12 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist @@ -1985,6 +1985,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist index e4cbe36279..80324e41aa 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist @@ -1989,6 +1989,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist index 9869feb56b..97b1d354af 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist @@ -2221,3 +2221,4 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist index e526dc4627..15be314921 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/libc.abilist @@ -116,6 +116,7 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl64 F GLIBC_2.3 _Exit F GLIBC_2.3 _IO_2_1_stderr_ D 0xe0 GLIBC_2.3 _IO_2_1_stdin_ D 0xe0 diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist index e6319eef8d..436b992251 100644 --- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist +++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist @@ -2093,3 +2093,4 @@ GLIBC_2.27 xdrstdio_create F GLIBC_2.27 xencrypt F GLIBC_2.27 xprt_register F GLIBC_2.27 xprt_unregister F +GLIBC_2.28 fcntl64 F diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist index 41cdda0c2e..f66715f0c9 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist @@ -1994,6 +1994,8 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist index 8a756cf287..bd6242861b 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist +++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist @@ -1900,6 +1900,7 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/sh/libc.abilist b/sysdeps/unix/sysv/linux/sh/libc.abilist index 999bddd1db..f2f070fbce 100644 --- a/sysdeps/unix/sysv/linux/sh/libc.abilist +++ b/sysdeps/unix/sysv/linux/sh/libc.abilist @@ -1876,6 +1876,8 @@ GLIBC_2.27 wcstof32x F GLIBC_2.27 wcstof32x_l F GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist index 7c4296fc10..265087f6a8 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist @@ -1988,6 +1988,8 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist index dafe9d74b7..16a69812cb 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist @@ -1930,6 +1930,7 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c b/sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c new file mode 100644 index 0000000000..d1d00eb3fb --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-ofdlocks-compat.c @@ -0,0 +1,84 @@ +/* Check non representable OFD locks regions in non-LFS mode for compat + mode (BZ #20251) + Copyright (C) 2018 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. +*/ + +#include <unistd.h> +#include <fcntl.h> +#include <stdint.h> +#include <errno.h> + +#include <support/temp_file.h> +#include <support/check.h> + +#include <shlib-compat.h> +#if TEST_COMPAT (libc, GLIBC_2_0, GLIBC_2_28) +compat_symbol_reference (libc, fcntl, fcntl, GLIBC_2_0); + +static char *temp_filename; +static int temp_fd; + +static void +do_prepare (int argc, char **argv) +{ + temp_fd = create_temp_file ("tst-ofdlocks-compat.", &temp_filename); + TEST_VERIFY_EXIT (temp_fd != -1); +} + +#define PREPARE do_prepare + +static int +do_test (void) +{ + /* The compat fcntl version for architectures which support non-LFS + operations does not wrap the flock OFD argument, so the struct is passed + unmodified to kernel. It means no EOVERFLOW is returned, so operations + with LFS should not incur in failure. */ + + struct flock64 lck64 = { + .l_type = F_WRLCK, + .l_whence = SEEK_SET, + .l_start = (off64_t)INT32_MAX + 1024, + .l_len = 1024, + }; + TEST_VERIFY_EXIT (fcntl (temp_fd, F_OFD_SETLKW, &lck64) == 0); + + /* Open file description locks placed through the same open file description + (either by same file descriptor or a duplicated one created by fork, + dup, fcntl F_DUPFD, etc.) overwrites then old lock. To force a + conflicting lock combination, it creates a new file descriptor. */ + int fd = open64 (temp_filename, O_RDWR, 0666); + TEST_VERIFY_EXIT (fd != -1); + + struct flock64 lck = { + .l_type = F_WRLCK, + .l_whence = SEEK_SET, + .l_start = INT32_MAX - 1024, + .l_len = 4 * 1024, + }; + TEST_VERIFY (fcntl (fd, F_OFD_GETLK, &lck) == 0); + + return 0; +} +#else +static int +do_test (void) +{ + return 77; +} +#endif + +#include <support/test-driver.c> diff --git a/sysdeps/unix/sysv/linux/tst-ofdlocks.c b/sysdeps/unix/sysv/linux/tst-ofdlocks.c new file mode 100644 index 0000000000..bd345e9b64 --- /dev/null +++ b/sysdeps/unix/sysv/linux/tst-ofdlocks.c @@ -0,0 +1,76 @@ +/* Check non representable OFD locks regions in non-LFS mode (BZ #20251) + Copyright (C) 2018 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, see <http://www.gnu.org/licenses/>. +*/ + +#include <unistd.h> +#include <fcntl.h> +#include <stdint.h> +#include <errno.h> + +#include <support/temp_file.h> +#include <support/check.h> + +static char *temp_filename; +static int temp_fd; + +static void +do_prepare (int argc, char **argv) +{ + temp_fd = create_temp_file ("tst-ofdlocks.", &temp_filename); + TEST_VERIFY_EXIT (temp_fd != -1); +} + +#define PREPARE do_prepare + +static int +do_test (void) +{ + /* It first allocates a open file description lock range which can not + be represented in a 32 bit struct flock. */ + struct flock64 lck64 = { + .l_type = F_WRLCK, + .l_whence = SEEK_SET, + .l_start = (off64_t)INT32_MAX + 1024, + .l_len = 1024, + }; + TEST_VERIFY_EXIT (fcntl64 (temp_fd, F_OFD_SETLKW, &lck64) == 0); + + /* Open file description locks placed through the same open file description + (either by same file descriptor or a duplicated one created by fork, + dup, fcntl F_DUPFD, etc.) overwrites then old lock. To force a + conflicting lock combination, it creates a new file descriptor. */ + int fd = open64 (temp_filename, O_RDWR, 0666); + TEST_VERIFY_EXIT (fd != -1); + + /* It tries then to allocate another open file descriptior with a valid + non-LFS bits struct flock but which will result in a conflicted region + which can not be represented in a non-LFS struct flock. */ + struct flock lck = { + .l_type = F_WRLCK, + .l_whence = SEEK_SET, + .l_start = INT32_MAX - 1024, + .l_len = 4 * 1024, + }; + int r = fcntl (fd, F_OFD_GETLK, &lck); + if (sizeof (off_t) != sizeof (off64_t)) + TEST_VERIFY (r == -1 && errno == EOVERFLOW); + else + TEST_VERIFY (r == 0); + + return 0; +} + +#include <support/test-driver.c> diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist index f72d494920..fa8c198d13 100644 --- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist @@ -1888,6 +1888,7 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F GLIBC_2.3 __ctype_b_loc F GLIBC_2.3 __ctype_tolower_loc F GLIBC_2.3 __ctype_toupper_loc F diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist index 96c9fa050e..2536971682 100644 --- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist +++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist @@ -2139,3 +2139,4 @@ GLIBC_2.27 wcstof64 F GLIBC_2.27 wcstof64_l F GLIBC_2.27 wcstof64x F GLIBC_2.27 wcstof64x_l F +GLIBC_2.28 fcntl64 F |