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