79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_COREDUMP_H
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#define _LINUX_COREDUMP_H
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/fs.h>
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#include <asm/siginfo.h>
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#ifdef CONFIG_COREDUMP
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struct core_vma_metadata {
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unsigned long start, end;
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unsigned long flags;
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unsigned long dump_size;
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unsigned long pgoff;
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struct file *file;
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};
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struct coredump_params {
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const kernel_siginfo_t *siginfo;
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struct file *file;
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unsigned long limit;
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unsigned long mm_flags;
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int cpu;
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loff_t written;
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loff_t pos;
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loff_t to_skip;
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int vma_count;
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size_t vma_data_size;
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struct core_vma_metadata *vma_meta;
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};
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extern unsigned int core_file_note_size_limit;
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/*
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* These are the only things you should do on a core-file: use only these
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* functions to write out all the necessary info.
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*/
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extern void dump_skip_to(struct coredump_params *cprm, unsigned long to);
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extern void dump_skip(struct coredump_params *cprm, size_t nr);
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extern int dump_emit(struct coredump_params *cprm, const void *addr, int nr);
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extern int dump_align(struct coredump_params *cprm, int align);
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int dump_user_range(struct coredump_params *cprm, unsigned long start,
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unsigned long len);
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extern void do_coredump(const kernel_siginfo_t *siginfo);
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/*
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* Logging for the coredump code, ratelimited.
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* The TGID and comm fields are added to the message.
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*/
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#define __COREDUMP_PRINTK(Level, Format, ...) \
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do { \
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char comm[TASK_COMM_LEN]; \
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\
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get_task_comm(comm, current); \
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printk_ratelimited(Level "coredump: %d(%*pE): " Format "\n", \
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task_tgid_vnr(current), (int)strlen(comm), comm, ##__VA_ARGS__); \
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} while (0) \
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#define coredump_report(fmt, ...) __COREDUMP_PRINTK(KERN_INFO, fmt, ##__VA_ARGS__)
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#define coredump_report_failure(fmt, ...) __COREDUMP_PRINTK(KERN_WARNING, fmt, ##__VA_ARGS__)
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#else
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static inline void do_coredump(const kernel_siginfo_t *siginfo) {}
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#define coredump_report(...)
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#define coredump_report_failure(...)
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#endif
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#if defined(CONFIG_COREDUMP) && defined(CONFIG_SYSCTL)
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extern void validate_coredump_safety(void);
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#else
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static inline void validate_coredump_safety(void) {}
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#endif
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#endif /* _LINUX_COREDUMP_H */
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