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path: root/sysdeps/unix/sysv/linux/access.c
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2016-11-16New internal function __access_noerrnoAdhemerval Zanella
Implement an internal version of __access called __access_noerrno that avoids setting errno. This is useful to check accessibility of files very early on in process startup i.e. before TLS setup. This allows tunables to replace MALLOC_CHECK_ safely (i.e. check existence of /etc/suid-debug to enable/disable MALLOC_CHECK) and at the same time initialize very early so that it can override IFUNCs. Checked on x86_64. * hurd/hurd.h (__hurd_fail_noerrno): New function. * include/unistd.h [IS_IN (rtld) || !defined SHARED]: Declare __access_noerrno. * io/access.c (__access_noerrno): New function. * sysdeps/mach/hurd/access.c (hurd_fail_seterrno): New function. (hurd_fail_seterrno): Likewise. (access_common): Likewise. (__access_noerrno): Likewise. * sysdeps/nacl/access.c (__access_noerrno): Likewise. * sysdeps/unix/sysv/linux/access.c (__access_noerrno): Likewise. * sysdeps/nacl/nacl-interfaces.h (NACL_CALL_NOERRNO): New macro.
2016-11-10Consolidate Linux access implementationAdhemerval Zanella
This patch consolidates the Linux access implementation on sysdeps/unix/sysv/linux/access.c. Similar to auto-generation through syscalls.list, __NR_access is check and __NR_faccessat is used only for newer architectures (where __NR_access is not defined). Checked on x86_64. * sysdeps/unix/sysv/linux/access.c: New file. * sysdeps/unix/sysv/linux/generic/access.c: Remove file.