1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_COREDUMP_H 3 #define _LINUX_COREDUMP_H 4 5 #include <linux/types.h> 6 #include <linux/mm.h> 7 #include <linux/fs.h> 8 #include <asm/siginfo.h> 9 10 #ifdef CONFIG_COREDUMP 11 struct core_vma_metadata { 12 unsigned long start, end; 13 unsigned long flags; 14 unsigned long dump_size; 15 unsigned long pgoff; 16 struct file *file; 17 }; 18 19 struct coredump_params { 20 const kernel_siginfo_t *siginfo; 21 struct pt_regs *regs; 22 struct file *file; 23 unsigned long limit; 24 unsigned long mm_flags; 25 int cpu; 26 loff_t written; 27 loff_t pos; 28 loff_t to_skip; 29 int vma_count; 30 size_t vma_data_size; 31 struct core_vma_metadata *vma_meta; 32 }; 33 34 /* 35 * These are the only things you should do on a core-file: use only these 36 * functions to write out all the necessary info. 37 */ 38 extern void dump_skip_to(struct coredump_params *cprm, unsigned long to); 39 extern void dump_skip(struct coredump_params *cprm, size_t nr); 40 extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr); 41 extern int dump_align(struct coredump_params *cprm, int align); 42 int dump_user_range(struct coredump_params *cprm, unsigned long start, 43 unsigned long len); 44 extern void do_coredump(const kernel_siginfo_t *siginfo); 45 #else 46 static inline void do_coredump(const kernel_siginfo_t *siginfo) {} 47 #endif 48 49 #if defined(CONFIG_COREDUMP) && defined(CONFIG_SYSCTL) 50 extern void validate_coredump_safety(void); 51 #else 52 static inline void validate_coredump_safety(void) {} 53 #endif 54 55 #endif /* _LINUX_COREDUMP_H */ 56