diff options
| -rw-r--r-- | arch/x86/ia32/ia32_aout.c | 22 | ||||
| -rw-r--r-- | fs/binfmt_aout.c | 4 | ||||
| -rw-r--r-- | include/linux/coredump.h | 2 |
3 files changed, 6 insertions, 22 deletions
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 0350311..2d93bdb 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -34,7 +34,7 @@ #include <asm/ia32.h> #undef WARN_OLD -#undef CORE_DUMP /* probably broken */ +#undef CORE_DUMP /* definitely broken */ static int load_aout_binary(struct linux_binprm *, struct pt_regs *regs); static int load_aout_library(struct file *); @@ -131,21 +131,15 @@ static void set_brk(unsigned long start, unsigned long end) * macros to write out all the necessary info. */ -static int dump_write(struct file *file, const void *addr, int nr) -{ - return file->f_op->write(file, addr, nr, &file->f_pos) == nr; -} +#include <linux/coredump.h> #define DUMP_WRITE(addr, nr) \ if (!dump_write(file, (void *)(addr), (nr))) \ goto end_coredump; -#define DUMP_SEEK(offset) \ - if (file->f_op->llseek) { \ - if (file->f_op->llseek(file, (offset), 0) != (offset)) \ - goto end_coredump; \ - } else \ - file->f_pos = (offset) +#define DUMP_SEEK(offset) \ + if (!dump_seek(file, offset)) \ + goto end_coredump; #define START_DATA() (u.u_tsize << PAGE_SHIFT) #define START_STACK(u) (u.start_stack) @@ -217,12 +211,6 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, dump_size = dump.u_ssize << PAGE_SHIFT; DUMP_WRITE(dump_start, dump_size); } - /* - * Finally dump the task struct. Not be used by gdb, but - * could be useful - */ - set_fs(KERNEL_DS); - DUMP_WRITE(current, sizeof(*current)); end_coredump: set_fs(fs); return has_dumped; diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index f96eff0..a6395bd 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -134,10 +134,6 @@ static int aout_core_dump(struct coredump_params *cprm) if (!dump_write(file, dump_start, dump_size)) goto end_coredump; } -/* Finally dump the task struct. Not be used by gdb, but could be useful */ - set_fs(KERNEL_DS); - if (!dump_write(file, current, sizeof(*current))) - goto end_coredump; end_coredump: set_fs(fs); return has_dumped; diff --git a/include/linux/coredump.h b/include/linux/coredump.h index 8ba66a9..59579cf 100644 --- a/include/linux/coredump.h +++ b/include/linux/coredump.h @@ -11,7 +11,7 @@ */ static inline int dump_write(struct file *file, const void *addr, int nr) { - return file->f_op->write(file, addr, nr, &file->f_pos) == nr; + return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, addr, nr, &file->f_pos) == nr; } static inline int dump_seek(struct file *file, loff_t off) |