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 file *file; 22 unsigned long limit; 23 unsigned long mm_flags; 24 int cpu; 25 loff_t written; 26 loff_t pos; 27 loff_t to_skip; 28 int vma_count; 29 size_t vma_data_size; 30 struct core_vma_metadata *vma_meta; 31 }; 32 33 /* 34 * These are the only things you should do on a core-file: use only these 35 * functions to write out all the necessary info. 36 */ 37 extern void dump_skip_to(struct coredump_params *cprm, unsigned long to); 38 extern void dump_skip(struct coredump_params *cprm, size_t nr); 39 extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr); 40 extern int dump_align(struct coredump_params *cprm, int align); 41 int dump_user_range(struct coredump_params *cprm, unsigned long start, 42 unsigned long len); 43 extern void do_coredump(const kernel_siginfo_t *siginfo); 44 #else do_coredump(const kernel_siginfo_t * siginfo)45static inline void do_coredump(const kernel_siginfo_t *siginfo) {} 46 #endif 47 48 #if defined(CONFIG_COREDUMP) && defined(CONFIG_SYSCTL) 49 extern void validate_coredump_safety(void); 50 #else validate_coredump_safety(void)51static inline void validate_coredump_safety(void) {} 52 #endif 53 54 #endif /* _LINUX_COREDUMP_H */ 55