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author | Roland McGrath <roland@gnu.org> | 1995-05-02 06:35:55 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-05-02 06:35:55 +0000 |
commit | d66e34cd423425c348bcc83df127dd19711b0b9a (patch) | |
tree | 97058e776d3b4fe06ef54bc4951596991652183f /sysdeps/generic | |
parent | 08162fa888913a5153d2fcdc4e1a816b57b1fe56 (diff) | |
download | glibc-d66e34cd423425c348bcc83df127dd19711b0b9a.zip glibc-d66e34cd423425c348bcc83df127dd19711b0b9a.tar.gz glibc-d66e34cd423425c348bcc83df127dd19711b0b9a.tar.bz2 |
* sysdeps/mach/i386/sysdep.h (SNARF_ARGS, CALL_WITH_SP): Rewritten.
* sysdeps/i386/dl-machine.h: New file.
* sysdeps/stub/dl-machine.h: New file.
* sysdeps/i386/dl-runtime.c: New file.
* sysdeps/stub/dl-runtime.c: New file.
* sysdeps/i386/elf/start.S: New file.
* sysdeps/generic/dl-sysdep.c: New file.
* sysdeps/mach/hurd/dl-sysdep.c: New file.
Diffstat (limited to 'sysdeps/generic')
-rw-r--r-- | sysdeps/generic/dl-sysdep.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c new file mode 100644 index 0000000..9b86f63 --- /dev/null +++ b/sysdeps/generic/dl-sysdep.c @@ -0,0 +1,98 @@ +/* Operating system support for run-time dynamic linker. Generic Unix version. +Copyright (C) 1995 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <elf.h> +#include <sys/types.h> +#include <fcntl.h> +#include <link.h> + +Elf32_Addr +_dl_sysdep_start (void **start_argptr, + void (*dl_main) (const Elf32_Phdr *phdr, Elf32_Word phnum, + Elf32_Addr *user_entry)) +{ + const Elf32_Phdr *phdr; + Elf32_Word phnum; + Elf32_Addr user_entry; + Elf32_auxv_t *av; + uid_t uid, euid; + gid_t gid, egid; + + _dl_argc = *(int *) start_argptr; + _dl_argv = start_argptr + 1; + _environ = &_dl_argv[_dl_argc + 1]; + start_argptr = (void **) _environ; + while (*start_argptr) + ++start_argptr; + + for (av = ++start_argptr; av->a_type != AT_NULL; ++av) + switch (av->a_type) + { + case AT_PHDR: + phdr = av->a_un.a_ptr; + break; + case AT_PHNUM: + phnum = av->a_un.a_val; + break; + case AT_ENTRY: + user_entry = av->a_un.a_val; + case AT_UID: + uid = av->a_un.a_val; + break; + case AT_GID: + gid = av->a_un.a_val; + break; + case AT_EUID: + euid = av->a_un.a_val; + break; + case AT_EGID: + egid = av->a_un.a_val; + break; + } + + _dl_secure = uid != euid || gid != egid; + + (*dl_main) (phdr, phnum, &user_entry); + start_argptr[-1] = (void *) user_entry; +} + +int +_dl_sysdep_open_zero_fill (void) +{ + return open ("/dev/zero", O_RDONLY); +} + +#include <stdarg.h> + +void +_dl_sysdep_fatal (const char *msg, ...) +{ + va_list ap; + + va_start (ap, msg); + do + { + size_t len = strlen (msg); + write (STDERR_FILENO, msg, len); + msg = va_arg (ap, const char *); + } while (msg); + va_end (ap); + + _exit (127); +} |