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2013-08-20PowerPC: fix backtrace to handle signal trampolinesAdhemerval Zanella
This patch fixes backtrace for PPC32 and PPC64 to correctly handle signal trampolines. The 'debug/tst-backtrace6.c' also check for SA_SIGINFO handling, where is triggers another vDSO symbols for PPC32.
2013-08-20Include <string.h> in sysdeps/unix/sysv/linux/mmap64.c.Joseph Myers
2013-08-20Use __getpagesize and __ffs in MMAP2_PAGE_SHIFT == -1 case of mmap64.Joseph Myers
2013-08-20 * sysdeps/unix/sysv/linux/s390/sys/procfs.h (struct elf_prstatus):Andreas Krebbel
Align 32 bit compat elf_greg to 8 bytes.
2013-08-16CVE-2013-4237, BZ #14699: Buffer overflow in readdir_rFlorian Weimer
* sysdeps/posix/dirstream.h (struct __dirstream): Add errcode member. * sysdeps/posix/opendir.c (__alloc_dir): Initialize errcode member. * sysdeps/posix/rewinddir.c (rewinddir): Reset errcode member. * sysdeps/posix/readdir_r.c (__READDIR_R): Enforce NAME_MAX limit. Return delayed error code. Remove GETDENTS_64BIT_ALIGNED conditional. * sysdeps/unix/sysv/linux/wordsize-64/readdir_r.c: Do not define GETDENTS_64BIT_ALIGNED. * sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise. * manual/filesys.texi (Reading/Closing Directory): Document ENAMETOOLONG return value of readdir_r. Recommend readdir more strongly. * manual/conf.texi (Limits for Files): Add portability note to NAME_MAX, PATH_MAX. (Pathconf): Add portability note for _PC_NAME_MAX, _PC_PATH_MAX.
2013-07-23PowerPC: use _dl_static_init to set GLRO(gl_pagesize)Adhemerval Zanella
This patch fixes dlfcn/tststatic5 for PowerPC where pagesize variable was not properly initialized in certain cases. This patch is based on other architecture code.
2013-07-21CVE-2013-2207, BZ #15755: Disable pt_chown.Carlos O'Donell
The helper binary pt_chown tricked into granting access to another user's pseudo-terminal. Pre-conditions for the attack: * Attacker with local user account * Kernel with FUSE support * "user_allow_other" in /etc/fuse.conf * Victim with allocated slave in /dev/pts Using the setuid installed pt_chown and a weak check on whether a file descriptor is a tty, an attacker could fake a pty check using FUSE and trick pt_chown to grant ownership of a pty descriptor that the current user does not own. It cannot access /dev/pts/ptmx however. In most modern distributions pt_chown is not needed because devpts is enabled by default. The fix for this CVE is to disable building and using pt_chown by default. We still provide a configure option to enable hte use of pt_chown but distributions do so at their own risk.
2013-07-16BZ #15711: Avoid circular dependency for syscall.hCarlos O'Donell
The generated header is compiled with `-ffreestanding' to avoid any circular dependencies against the installed implementation headers. Such a dependency would require the implementation header to be installed before the generated header could be built (See bug 15711). In current practice the generated header dependencies do not include any of the implementation headers removed by the use of `-ffreestanding'. --- 2013-07-15 Carlos O'Donell <carlos@redhat.com> [BZ #15711] * sysdeps/unix/sysv/linux/Makefile ($(objpfx)bits/syscall%h): Avoid system header dependency with -ffreestanding. ($(objpfx)bits/syscall%d): Likewise.
2013-07-04Sync sys/ptrace with Linux 3.10Andreas Jaeger
2013-06-28Add GLRO(dl_hwcap2) for new AT_HWCAP2 auxv_t a_type.Ryan S. Arnold
2013-06-28Consistently use page_shift in sysdeps/unix/sysv/linux/mmap64.c.Joseph Myers
2013-06-24PowerPC: Enable POWER8 platform sans hwcap bits.Ryan S. Arnold
2013-06-22Include <string.h> in sysdeps/unix/sysv/linux/libc_fatal.c.Joseph Myers
2013-06-15New API to set default thread attributesSiddhesh Poyarekar
This patch introduces two new convenience functions to set the default thread attributes used for creating threads. This allows a programmer to set the default thread attributes just once in a process and then run pthread_create without additional attributes.
2013-06-13Improve precision of clock() function on LinuxSiddhesh Poyarekar
Resolves #12515. Use CLOCK_PROCESS_CPUTIME_ID instead of times to get better precision in the value returned by clock.
2013-06-11Fix symbol definitions for __clock_* functionsSiddhesh Poyarekar
__clock_gettime and other __clock_* functions could result in an extra PLT reference within libc.so if it actually gets used. None of the code currently uses them, which is why this probably went unnoticed.
2013-06-08Use (void) in no-arguments function definitions.Joseph Myers
2013-06-06Fix leading whitespaces.Ondrej Bilka
2013-06-05Remove trailing whitespace.Joseph Myers
2013-05-22Update bits/siginfo.h with Linux hwpoison SIGBUS changesEdjunior Barbosa Machado
Adds new SIGBUS error codes for hardware poison signals, syncing with the current kernel headers (v3.9). It also adds si_trapno field for alpha.
2013-05-16Add #include <stdint.h> for uint[32|64]_t usage (except installed headers).Ryan S. Arnold
2013-05-15Update s390/bits/siginfo.hEdjunior Machado
2013-05-15 Edjunior Machado <emachado@linux.vnet.ibm.com> * sysdeps/unix/sysv/linux/s390/bits/siginfo.h (siginfo_t): Remove si_trapno and add si_addr_lsb to _sifields.sigfault. (si_trapno): Remove macro. (si_addr_lsb): Define new macro. (BUS_MCEERR_AR, BUS_MCEERR_AO): Define new values.
2013-05-10Add getgid.c for SHChristian Grönke
[BZ #12387] * sysdeps/unix/sysv/linux/sh/getgid.c: New file.
2013-05-10Fix integer overflow in sysdeps/unix/sysv/linux/bits/sched.hAndreas Jaeger
[BZ #15448] * sysdeps/unix/sysv/linux/bits/sched.h (__CPU_SET_S) (__CPU_CLR_S, __CPU_ISSET_S): Avoid integer overflow.
2013-05-06Fix glob64 broken by cleanup.Roland McGrath
2013-05-06Move dummy glob64.c alongside glob.c that defines glob64.Roland McGrath
2013-05-06Split _dl_writev out from _dl_debug_vdprintf.Roland McGrath
2013-05-03Consolidate definitions of _FORTIFY_SOURCE wrappers for open{,64}{,at}.Roland McGrath
2013-05-03PowerPC: Add time vDSO supportAdhemerval Zanella
PowerPC kernel now provides a vDSO implementation for time syscall (commit fcb41a2030abe0eb716ef0798035ef9562097f42). This patch changes time syscall wrapper to use the vDSO when available. It also changes the default non vDSO time on PowerPC to use sysdeps/posix/time.c (since gettimeofday is a vDSO call).
2013-05-03Sync with Linux 3.9Andreas Jaeger
* sysdeps/gnu/netinet/tcp.h (TCP_TIMESTAMP): New value, from Linux 3.9. * sysdeps/unix/sysv/linux/bits/socket.h (PF_VSOCK, AF_VSOCK): Add. (PF_MAX): Adjust for VSOCK change.
2013-04-23S/390: Change struct statfs[64] member types to unsigned valuesHeiko Carstens
Kay Sievers reported that coreutils' stat tool has a problem with s390's statfs[64] definition: > The definition of struct statfs::f_type needs a fix. s390 is the only > architecture in the kernel that uses an int and expects magic > constants lager than INT_MAX to fit into. > > A fix is needed to make Fedora boot on s390, it currently fails to do > so. Userspace does not want to add code to paper-over this issue. [...] > Even coreutils cannot handle it: > #define RAMFS_MAGIC 0x858458f6 > # stat -f -c%t / > ffffffff858458f6 > > #define BTRFS_SUPER_MAGIC 0x9123683E > # stat -f -c%t /mnt > ffffffff9123683e The bug is caused by an implicit sign extension within the stat tool: out_uint_x (pformat, prefix_len, statfsbuf->f_type); where the format finally will be "%lx". A similar problem can be found in the 'tail' tool. s390 is the only architecture which has an int type f_type member in struct statfs[64]. Other architectures have either unsigned ints or long values, so that the problem doesn't occur there. Therefore change the type of the f_type member to unsigned int, so that we get zero extension instead sign extension when assignment to a long value happens. Reported-by: Kay Sievers <kay@vrfy.org> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2013-04-18Remove __wur from setfsuid and setfsgid.Adam Conrad
2013-04-03Preserve errno across _PC_CHOWN_RESTRICTED call on XFSSiddhesh Poyarekar
Fix BZ #15305. On kernel versions earlier than 2.6.29, the Linux kernel exported a sysctl called restrict_chown for xfs, which could be used to allow chown to users other than the owner. 2.6.29 removed this support, causing the open_not_cancel_2 to fail and thus modify errno. The fix is to save and restore errno so that the caller sees it as unmodified. Additionally, since the code to check the sysctl is not useful on newer kernels, we add an ifdef so that in future the code block gets rmeoved completely.
2013-04-02New <math.h> macro named issignaling to check for a signaling NaN (sNaN).Thomas Schwinge
It is based on draft TS 18661 and currently enabled as a GNU extension.
2013-03-19Consolidate Linux and POSIX libc_fatal code.Roland McGrath
2013-03-15Move _dl_non_dynamic_init, _dl_aux_init declarations.Roland McGrath
2013-03-15PowerPC: gettimeofday optimization by using IFUNCAdhemerval Zanella
2013-03-14Fix formatting in last changeSiddhesh Poyarekar
2013-03-14Fix __times() handling of EFAULT when buf is NULLPetr Baudis
2013-03-11Remove extra pthread_atfork compat symbolsAndreas Schwab
2013-03-08PowerPC: unify math_ldbl.h implementationsAdhemerval Zanella
This patch removes redudant definition from PowerPC specific math_ldbl, using the definitions from ieee754 math_ldbl.h.
2013-03-07Install <bits/mman-linux.h>Andreas Jaeger
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add bits/mman-linux.h.
2013-03-07Remove PIPE_BUF Linux-specific codeSiddhesh Poyarekar
Fixes BZ #12723 The variable pipe buffer size does nothing to the value of PIPE_BUF, since the number of bytes that are atomically written is still PIPE_BUF on Linux.
2013-03-06Use <bits/mman-linux.h> for MIPSAndreas Jaeger
* sysdeps/unix/sysv/linux/bits/mman-linux.h (MAP_ANONYMOUS): Allow definition via __MAP_ANONYMOUS. * sysdeps/unix/sysv/linux/mips/bits/mman.h: Remove all defines provided by bits/mman-linux.h and include <bits/mman-linux.h>. (__MAP_ANONYMOUS): Define.
2013-03-06Remove MAP_GROWSUP on s390Andreas Jaeger
* sysdeps/unix/sysv/linux/s390/bits/mman.h (MAP_GROWSUP): Remove, it's not part of Linux headers.
2013-03-06Sync with Linux 3.8Andreas Jaeger
2013-03-06Remove powerpc64 bounded-pointers code.Joseph Myers
2013-03-05Define MCL_CURRENT, MCL_FUTURE in bits/mman-linux.hAndreas Jaeger
* sysdeps/unix/sysv/linux/s390/bits/mman.h: Include <bits/mman-linux.h>. (MCL_CURRENT, MCL_FUTURE): Do not define here, the generic value is fine. * sysdeps/unix/sysv/linux/sh/bits/mman.h: Move include of <bits/mman-linux.h> to end of file. (MCL_CURRENT, MCL_FUTURE): Do not define here, the generic value is fine. * sysdeps/unix/sysv/linux/x86/bits/mman.h: Move include of <bits/mman-linux.h> to end of file. (MCL_CURRENT, MCL_FUTURE): Do not define here, the generic value is fine. * sysdeps/unix/sysv/linux/sparc/bits/mman.h: Move include of <bits/mman-linux.h> to end of file. * sysdeps/unix/sysv/linux/bits/mman-linux.h [!MCL_CURRENT] (MCL_CURRENT, MCL_FUTURE): Define here.
2013-03-05S/390: Fix rt_sigprocmask syscall invocation in get/set/swapcontext.Andreas Krebbel
2013-03-04Create <bits/mman-linux.h>Andreas Jaeger
* sysdeps/unix/sysv/linux/bits/mman-linux.h: New file, with Linux common definitions. * sysdeps/unix/sysv/linux/sh/bits/mman.h: Remove all defines provided by bits/mman-linux.h and include <bits/mman-linux.h>. * sysdeps/unix/sysv/linux/x86/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/s390/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/mman.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/mman.h: Likewise.
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