3c9a7b0d6d
Fix commit 70a38d42c5 ("New entry points for writing Linux NT_PRPSINFO
notes."), <https://sourceware.org/ml/binutils/2013-02/msg00023.html>,
and handle both variants of the 64-bit Linux core PRPSINFO note across
all targets.
The 64-bit Linux core PRPSINFO note matches the 64-bit kernel structure,
defined as follows:
(gdb) ptype struct elf_prpsinfo
type = struct elf_prpsinfo {
char pr_state;
char pr_sname;
char pr_zomb;
char pr_nice;
unsigned long pr_flag;
__kernel_uid_t pr_uid;
__kernel_gid_t pr_gid;
pid_t pr_pid;
pid_t pr_ppid;
pid_t pr_pgrp;
pid_t pr_sid;
char pr_fname[16];
char pr_psargs[80];
}
(gdb)
where the individual data types of most members are the same across all
64-bit Linux ports, with the exception of `__kernel_uid_t' and
`__kernel_gid_t'. These are defined in <asm-generic/posix_types.h> as
32-bit `unsigned int' by default, however overridden as 16-bit `unsigned
short' in port-specific <asm/posix_types.h> for the SuperH target.
The default is already handled, as from the commit referred. Add the
other variant then and provide a backend flag to switch between the two
cases possible, with the 32-bit one being the default and the 16-bit one
explicitly selected. Set the flag in the SuperH target backend. This
arrangement is analogous to how the 32-bit Linux core PRPSINFO note is
handled.
bfd/
* elf-bfd.h (elf_backend_data): Add `linux_prpsinfo64_ugid16'
member.
* elf-linux-core.h (elf_external_linux_prpsinfo64): Rename to...
(elf_external_linux_prpsinfo64_ugid32): ... this.
(swap_linux_prpsinfo32_out): Rename to...
(swap_linux_prpsinfo32_ugid32_out): ... this.
(elf_external_linux_prpsinfo64_ugid16): New structure.
(swap_linux_prpsinfo64_ugid16_out): New function.
* elfxx-target.h [!elf_backend_linux_prpsinfo64_ugid16]
(elf_backend_linux_prpsinfo64_ugid16): Define.
(elfNN_bed): Initialize `linux_prpsinfo64_ugid16' member.
* elf.c (elfcore_write_linux_prpsinfo64): Handle both variants
of the 64-bit Linux core PRPSINFO note.
* elf64-sh64.c (elf_backend_linux_prpsinfo64_ugid16): Define.
235 lines
8.7 KiB
C
235 lines
8.7 KiB
C
/* Definitions for PRPSINFO structures under ELF on GNU/Linux.
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Copyright (C) 2013-2017 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef ELF_LINUX_CORE_H
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#define ELF_LINUX_CORE_H
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/* External 32-bit structure for PRPSINFO. This structure is
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ABI-defined, thus we choose to use char arrays here in order to
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avoid dealing with different types in different architectures.
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This is the variant for targets which use a 32-bit data type for
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UID and GID, as all modern Linux ports do. Some older ports use
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a 16-bit data type instead; see below for the alternative variant.
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This structure will ultimately be written in the corefile's note
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section, as the PRPSINFO. */
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struct elf_external_linux_prpsinfo32_ugid32
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{
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char pr_state; /* Numeric process state. */
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char pr_sname; /* Char for pr_state. */
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char pr_zomb; /* Zombie. */
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char pr_nice; /* Nice val. */
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char pr_flag[4]; /* Flags. */
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char pr_uid[4];
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char pr_gid[4];
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char pr_pid[4];
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char pr_ppid[4];
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char pr_pgrp[4];
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char pr_sid[4];
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char pr_fname[16]; /* Filename of executable. */
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char pr_psargs[80]; /* Initial part of arg list. */
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};
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/* Helper function to copy an elf_internal_linux_prpsinfo in host
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endian to an elf_external_linux_prpsinfo32_ugid32 in target endian. */
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static inline void
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swap_linux_prpsinfo32_ugid32_out
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(bfd *obfd,
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const struct elf_internal_linux_prpsinfo *from,
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struct elf_external_linux_prpsinfo32_ugid32 *to)
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{
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bfd_put_8 (obfd, from->pr_state, &to->pr_state);
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bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
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bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
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bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
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bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
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bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
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bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
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bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
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bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
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bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
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bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
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strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
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strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
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}
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/* External 32-bit structure for PRPSINFO. This structure is
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ABI-defined, thus we choose to use char arrays here in order to
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avoid dealing with different types in different architectures.
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This is the variant for targets which use a 16-bit data type for
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UID and GID, as some older Linux ports do. All modern ports use
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a 32-bit data type instead; see above for the alternative variant.
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This structure will ultimately be written in the corefile's note
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section, as the PRPSINFO. */
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struct elf_external_linux_prpsinfo32_ugid16
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{
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char pr_state; /* Numeric process state. */
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char pr_sname; /* Char for pr_state. */
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char pr_zomb; /* Zombie. */
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char pr_nice; /* Nice val. */
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char pr_flag[4]; /* Flags. */
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char pr_uid[2];
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char pr_gid[2];
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char pr_pid[4];
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char pr_ppid[4];
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char pr_pgrp[4];
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char pr_sid[4];
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char pr_fname[16]; /* Filename of executable. */
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char pr_psargs[80]; /* Initial part of arg list. */
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};
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/* Helper function to copy an elf_internal_linux_prpsinfo in host
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endian to an elf_external_linux_prpsinfo32_ugid16 in target endian. */
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static inline void
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swap_linux_prpsinfo32_ugid16_out
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(bfd *obfd,
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const struct elf_internal_linux_prpsinfo *from,
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struct elf_external_linux_prpsinfo32_ugid16 *to)
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{
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bfd_put_8 (obfd, from->pr_state, &to->pr_state);
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bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
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bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
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bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
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bfd_put_32 (obfd, from->pr_flag, to->pr_flag);
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bfd_put_16 (obfd, from->pr_uid, to->pr_uid);
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bfd_put_16 (obfd, from->pr_gid, to->pr_gid);
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bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
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bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
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bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
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bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
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strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
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strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
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}
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/* External 64-bit structure for PRPSINFO. This structure is
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ABI-defined, thus we choose to use char arrays here in order to
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avoid dealing with different types in different architectures.
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This is the variant for targets which use a 32-bit data type for
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UID and GID, as most Linux ports do. The SH64 port uses a 16-bit
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data type instead; see below for the alternative variant.
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This structure will ultimately be written in the corefile's note
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section, as the PRPSINFO. */
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struct elf_external_linux_prpsinfo64_ugid32
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{
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char pr_state; /* Numeric process state. */
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char pr_sname; /* Char for pr_state. */
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char pr_zomb; /* Zombie. */
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char pr_nice; /* Nice val. */
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char gap[4];
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char pr_flag[8]; /* Flags. */
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char pr_uid[4];
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char pr_gid[4];
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char pr_pid[4];
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char pr_ppid[4];
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char pr_pgrp[4];
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char pr_sid[4];
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char pr_fname[16]; /* Filename of executable. */
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char pr_psargs[80]; /* Initial part of arg list. */
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};
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/* Helper function to copy an elf_internal_linux_prpsinfo in host
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endian to an elf_external_linux_prpsinfo64_ugid32 in target endian. */
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static inline void
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swap_linux_prpsinfo64_ugid32_out
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(bfd *obfd,
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const struct elf_internal_linux_prpsinfo *from,
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struct elf_external_linux_prpsinfo64_ugid32 *to)
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{
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bfd_put_8 (obfd, from->pr_state, &to->pr_state);
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bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
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bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
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bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
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bfd_put_64 (obfd, from->pr_flag, to->pr_flag);
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bfd_put_32 (obfd, from->pr_uid, to->pr_uid);
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bfd_put_32 (obfd, from->pr_gid, to->pr_gid);
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bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
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bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
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bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
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bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
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strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
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strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
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}
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/* External 64-bit structure for PRPSINFO. This structure is
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ABI-defined, thus we choose to use char arrays here in order to
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avoid dealing with different types in different architectures.
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This is the variant for the SH64 port which uses a 16-bit data
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type for UID and GID. Most Linux ports use a 32-bit data type
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instead; see above for the alternative variant.
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This structure will ultimately be written in the corefile's note
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section, as the PRPSINFO. */
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struct elf_external_linux_prpsinfo64_ugid16
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{
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char pr_state; /* Numeric process state. */
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char pr_sname; /* Char for pr_state. */
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char pr_zomb; /* Zombie. */
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char pr_nice; /* Nice val. */
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char gap[4];
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char pr_flag[8]; /* Flags. */
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char pr_uid[2];
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char pr_gid[2];
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char pr_pid[4];
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char pr_ppid[4];
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char pr_pgrp[4];
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char pr_sid[4];
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char pr_fname[16]; /* Filename of executable. */
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char pr_psargs[80]; /* Initial part of arg list. */
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};
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/* Helper function to copy an elf_internal_linux_prpsinfo in host
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endian to an elf_external_linux_prpsinfo64_ugid16 in target endian. */
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static inline void
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swap_linux_prpsinfo64_ugid16_out
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(bfd *obfd,
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const struct elf_internal_linux_prpsinfo *from,
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struct elf_external_linux_prpsinfo64_ugid16 *to)
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{
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bfd_put_8 (obfd, from->pr_state, &to->pr_state);
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bfd_put_8 (obfd, from->pr_sname, &to->pr_sname);
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bfd_put_8 (obfd, from->pr_zomb, &to->pr_zomb);
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bfd_put_8 (obfd, from->pr_nice, &to->pr_nice);
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bfd_put_64 (obfd, from->pr_flag, to->pr_flag);
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bfd_put_16 (obfd, from->pr_uid, to->pr_uid);
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bfd_put_16 (obfd, from->pr_gid, to->pr_gid);
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bfd_put_32 (obfd, from->pr_pid, to->pr_pid);
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bfd_put_32 (obfd, from->pr_ppid, to->pr_ppid);
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bfd_put_32 (obfd, from->pr_pgrp, to->pr_pgrp);
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bfd_put_32 (obfd, from->pr_sid, to->pr_sid);
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strncpy (to->pr_fname, from->pr_fname, sizeof (to->pr_fname));
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strncpy (to->pr_psargs, from->pr_psargs, sizeof (to->pr_psargs));
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}
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#endif
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