146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_ELFCORE_H
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#define _LINUX_ELFCORE_H
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#include <linux/user.h>
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#include <linux/bug.h>
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#include <linux/sched/task_stack.h>
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#include <linux/types.h>
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#include <linux/signal.h>
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#include <linux/time.h>
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#include <linux/ptrace.h>
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#include <linux/fs.h>
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#include <linux/elf.h>
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struct coredump_params;
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struct elf_siginfo
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{
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int si_signo; /* signal number */
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int si_code; /* extra code */
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int si_errno; /* errno */
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};
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/*
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* Definitions to generate Intel SVR4-like core files.
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* These mostly have the same names as the SVR4 types with "elf_"
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* tacked on the front to prevent clashes with linux definitions,
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* and the typedef forms have been avoided. This is mostly like
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* the SVR4 structure, but more Linuxy, with things that Linux does
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* not support and which gdb doesn't really use excluded.
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*/
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struct elf_prstatus_common
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{
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struct elf_siginfo pr_info; /* Info associated with signal */
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short pr_cursig; /* Current signal */
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unsigned long pr_sigpend; /* Set of pending signals */
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unsigned long pr_sighold; /* Set of held signals */
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pid_t pr_pid;
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pid_t pr_ppid;
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pid_t pr_pgrp;
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pid_t pr_sid;
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struct __kernel_old_timeval pr_utime; /* User time */
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struct __kernel_old_timeval pr_stime; /* System time */
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struct __kernel_old_timeval pr_cutime; /* Cumulative user time */
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struct __kernel_old_timeval pr_cstime; /* Cumulative system time */
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};
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struct elf_prstatus
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{
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struct elf_prstatus_common common;
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elf_gregset_t pr_reg; /* GP registers */
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int pr_fpvalid; /* True if math co-processor being used. */
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};
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#define ELF_PRARGSZ (80) /* Number of chars for args */
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struct elf_prpsinfo
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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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unsigned long pr_flag; /* flags */
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__kernel_uid_t pr_uid;
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__kernel_gid_t pr_gid;
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pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
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/* Lots missing */
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/*
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* The hard-coded 16 is derived from TASK_COMM_LEN, but it can't be
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* changed as it is exposed to userspace. We'd better make it hard-coded
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* here.
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*/
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char pr_fname[16]; /* filename of executable */
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char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
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};
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static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
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{
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#ifdef ELF_CORE_COPY_REGS
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ELF_CORE_COPY_REGS((*elfregs), regs)
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#else
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BUG_ON(sizeof(*elfregs) != sizeof(*regs));
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*(struct pt_regs *)elfregs = *regs;
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#endif
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}
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static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
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{
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#if defined (ELF_CORE_COPY_TASK_REGS)
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return ELF_CORE_COPY_TASK_REGS(t, elfregs);
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#elif defined (task_pt_regs)
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elf_core_copy_regs(elfregs, task_pt_regs(t));
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#endif
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return 0;
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}
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extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
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static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu)
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{
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#ifdef ELF_CORE_COPY_FPREGS
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return ELF_CORE_COPY_FPREGS(t, fpu);
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#else
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return dump_fpu(regs, fpu);
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#endif
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}
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#ifdef CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS
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/*
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* These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
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* extra segments containing the gate DSO contents. Dumping its
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* contents makes post-mortem fully interpretable later without matching up
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* the same kernel and hardware config to see what PC values meant.
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* Dumping its extra ELF program headers includes all the other information
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* a debugger needs to easily find how the gate DSO was being used.
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*/
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extern Elf_Half elf_core_extra_phdrs(struct coredump_params *cprm);
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extern int
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elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
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extern int
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elf_core_write_extra_data(struct coredump_params *cprm);
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extern size_t elf_core_extra_data_size(struct coredump_params *cprm);
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#else
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static inline Elf_Half elf_core_extra_phdrs(struct coredump_params *cprm)
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{
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return 0;
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}
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static inline int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
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{
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return 1;
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}
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static inline int elf_core_write_extra_data(struct coredump_params *cprm)
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{
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return 1;
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}
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static inline size_t elf_core_extra_data_size(struct coredump_params *cprm)
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{
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return 0;
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}
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#endif /* CONFIG_ARCH_BINFMT_ELF_EXTRA_PHDRS */
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#endif /* _LINUX_ELFCORE_H */
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