diff options
Diffstat (limited to 'include/linux/elfcore.h')
| -rw-r--r-- | include/linux/elfcore.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h new file mode 100644 index 000000000..79e26b18b --- /dev/null +++ b/include/linux/elfcore.h @@ -0,0 +1,145 @@ +/* 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 */ |