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22b79ed7f4
Since __libc_init_secure is called before ARCH_SETUP_TLS, it must use "int $0x80" for system calls in i386 static PIE. Add startup_getuid, startup_geteuid, startup_getgid and startup_getegid to <startup.h>. Update __libc_init_secure to use them. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
/* Linux/i386 definitions of functions used by static libc main startup.
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Copyright (C) 2017-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#if BUILD_PIE_DEFAULT
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/* Can't use "call *%gs:SYSINFO_OFFSET" during statup in static PIE. */
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# define I386_USE_SYSENTER 0
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# include <sysdep.h>
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# include <abort-instr.h>
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__attribute__ ((__noreturn__))
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static inline void
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_startup_fatal (const char *message __attribute__ ((unused)))
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{
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/* This is only called very early during startup in static PIE.
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FIXME: How can it be improved? */
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ABORT_INSTRUCTION;
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__builtin_unreachable ();
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}
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static inline uid_t
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startup_getuid (void)
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{
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return (uid_t) INTERNAL_SYSCALL_CALL (getuid32);
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}
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static inline uid_t
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startup_geteuid (void)
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{
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return (uid_t) INTERNAL_SYSCALL_CALL (geteuid32);
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}
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static inline gid_t
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startup_getgid (void)
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{
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return (gid_t) INTERNAL_SYSCALL_CALL (getgid32);
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}
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static inline gid_t
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startup_getegid (void)
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{
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return (gid_t) INTERNAL_SYSCALL_CALL (getegid32);
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}
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#else
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# include_next <startup.h>
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#endif
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