From 3dc20cb282ec03cc4c997130d680c800011ed479 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 13 Apr 2013 20:31:37 -0400 Subject: new helper: read_code() switch binfmts that use ->read() to that (and to kernel_read() in several cases in binfmt_flat - sure, it's nommu, but still, doing ->read() into kmalloc'ed buffer...) Signed-off-by: Al Viro --- fs/binfmt_aout.c | 25 ++++++------------------- 1 file changed, 6 insertions(+), 19 deletions(-) (limited to 'fs/binfmt_aout.c') diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index bbc8f8827eac..b23253df8756 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -287,15 +287,12 @@ static int load_aout_binary(struct linux_binprm * bprm) return error; } - error = bprm->file->f_op->read(bprm->file, - (char __user *)text_addr, - ex.a_text+ex.a_data, &pos); + error = read_code(bprm->file, text_addr, pos, + ex.a_text+ex.a_data); if ((signed long)error < 0) { send_sig(SIGKILL, current, 0); return error; } - - flush_icache_range(text_addr, text_addr+ex.a_text+ex.a_data); } else { if ((ex.a_text & 0xfff || ex.a_data & 0xfff) && (N_MAGIC(ex) != NMAGIC) && printk_ratelimit()) @@ -311,14 +308,9 @@ static int load_aout_binary(struct linux_binprm * bprm) } if (!bprm->file->f_op->mmap||((fd_offset & ~PAGE_MASK) != 0)) { - loff_t pos = fd_offset; vm_brk(N_TXTADDR(ex), ex.a_text+ex.a_data); - bprm->file->f_op->read(bprm->file, - (char __user *)N_TXTADDR(ex), - ex.a_text+ex.a_data, &pos); - flush_icache_range((unsigned long) N_TXTADDR(ex), - (unsigned long) N_TXTADDR(ex) + - ex.a_text+ex.a_data); + read_code(bprm->file, N_TXTADDR(ex), fd_offset, + ex.a_text + ex.a_data); goto beyond_if; } @@ -397,8 +389,6 @@ static int load_aout_library(struct file *file) start_addr = ex.a_entry & 0xfffff000; if ((N_TXTOFF(ex) & ~PAGE_MASK) != 0) { - loff_t pos = N_TXTOFF(ex); - if (printk_ratelimit()) { printk(KERN_WARNING @@ -407,11 +397,8 @@ static int load_aout_library(struct file *file) } vm_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss); - file->f_op->read(file, (char __user *)start_addr, - ex.a_text + ex.a_data, &pos); - flush_icache_range((unsigned long) start_addr, - (unsigned long) start_addr + ex.a_text + ex.a_data); - + read_code(file, start_addr, N_TXTOFF(ex), + ex.a_text + ex.a_data); retval = 0; goto out; } -- cgit v1.2.3-59-g8ed1b