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| author | Al Viro <viro@zeniv.linux.org.uk> | 2013-04-13 20:31:37 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-04-29 15:40:23 -0400 |
| commit | 3dc20cb282ec03cc4c997130d680c800011ed479 (patch) | |
| tree | d8374e58a433a144c571e193cb0b024374ee0b6a /fs/exec.c | |
| parent | 3af0761307d04f6b9a4626fb80011a22c143d75e (diff) | |
| download | linux-3dc20cb282ec03cc4c997130d680c800011ed479.tar.bz2 | |
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 <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/exec.c b/fs/exec.c index a96a4885bbbf..77dc9096440f 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -802,6 +802,15 @@ int kernel_read(struct file *file, loff_t offset, EXPORT_SYMBOL(kernel_read); +ssize_t read_code(struct file *file, unsigned long addr, loff_t pos, size_t len) +{ + ssize_t res = file->f_op->read(file, (void __user *)addr, len, &pos); + if (res > 0) + flush_icache_range(addr, addr + len); + return res; +} +EXPORT_SYMBOL(read_code); + static int exec_mmap(struct mm_struct *mm) { struct task_struct *tsk; |