diff options
Diffstat (limited to 'fs/coredump.c')
| -rw-r--r-- | fs/coredump.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/fs/coredump.c b/fs/coredump.c index e525b6017cdf..592683711c64 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -16,6 +16,9 @@ #include <linux/personality.h> #include <linux/binfmts.h> #include <linux/coredump.h> +#include <linux/sched/coredump.h> +#include <linux/sched/signal.h> +#include <linux/sched/task_stack.h> #include <linux/utsname.h> #include <linux/pid_namespace.h> #include <linux/module.h> @@ -33,7 +36,6 @@ #include <linux/pipe_fs_i.h> #include <linux/oom.h> #include <linux/compat.h> -#include <linux/sched.h> #include <linux/fs.h> #include <linux/path.h> #include <linux/timekeeping.h> @@ -833,3 +835,21 @@ int dump_align(struct coredump_params *cprm, int align) return mod ? dump_skip(cprm, align - mod) : 1; } EXPORT_SYMBOL(dump_align); + +/* + * Ensures that file size is big enough to contain the current file + * postion. This prevents gdb from complaining about a truncated file + * if the last "write" to the file was dump_skip. + */ +void dump_truncate(struct coredump_params *cprm) +{ + struct file *file = cprm->file; + loff_t offset; + + if (file->f_op->llseek && file->f_op->llseek != no_llseek) { + offset = file->f_op->llseek(file, 0, SEEK_CUR); + if (i_size_read(file->f_mapping->host) < offset) + do_truncate(file->f_path.dentry, offset, 0, file); + } +} +EXPORT_SYMBOL(dump_truncate); |
