diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/binfmt_elf.c | 1 | ||||
| -rw-r--r-- | fs/coredump.c | 18 |
2 files changed, 19 insertions, 0 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 3a93755e880f..29ef427c0652 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -2295,6 +2295,7 @@ static int elf_core_dump(struct coredump_params *cprm) goto end_coredump; } } + dump_truncate(cprm); if (!elf_core_write_extra_data(cprm)) goto end_coredump; diff --git a/fs/coredump.c b/fs/coredump.c index 5d15c4975ba1..a8852293038a 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -810,3 +810,21 @@ 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); |