From:Suzuki K. Poulose <[email protected]> Calculate the size of the core file
Signed-off-by: Suzuki K. Poulose <[email protected]> Signed-off-by: Ananth N. Mavinakayanahalli <[email protected]> --- fs/proc/gencore-elf.c | 6 ++++++ fs/proc/gencore.h | 1 + 2 files changed, 7 insertions(+) diff --git a/fs/proc/gencore-elf.c b/fs/proc/gencore-elf.c index 6e97f6a..efd1722 100644 --- a/fs/proc/gencore-elf.c +++ b/fs/proc/gencore-elf.c @@ -291,6 +291,9 @@ static int create_elf_header(struct core_proc *cp) dataoff, cp->nphdrs); dataoff += sizeof(struct elf_shdr); } + + cp->size = dataoff; + /* Store the notes */ tinfo = cp->tinfo; do { @@ -351,6 +354,9 @@ ssize_t elf_read_gencore(struct core_proc *cp, char __user *buffer, buffer += bcp; } } + if (*fpos > cp->size) + goto out; + out: return ret; } diff --git a/fs/proc/gencore.h b/fs/proc/gencore.h index e508417..f6822f2 100644 --- a/fs/proc/gencore.h +++ b/fs/proc/gencore.h @@ -30,6 +30,7 @@ struct core_proc { size_t elf_buflen; /* size of elf_buf */ size_t nphdrs; /* number of phdrs */ size_t notes_size; + size_t size; }; #ifdef CORE_DUMP_USE_REGSET -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
