/* 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); #else elf_core_copy_regs(elfregs, task_pt_regs(t)); #endif return 0; } int elf_core_copy_task_fpregs(struct task_struct *t, elf_fpregset_t *fpu); #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 */