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fs: fix kernel_read prototype

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Use proper ssize_t and size_t types for the return value and count
argument, move the offset last and make it an in/out argument like
all other read/write helpers, and make the buf argument a void pointer
to get rid of lots of casts in the callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2017-09-01 17:39:13 +02:00
committed by Al Viro
parent c41fbad015
commit bdd1d2d3d2
17 changed files with 69 additions and 71 deletions
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5
fs/binfmt_misc.c
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@@ -218,12 +218,15 @@ static int load_misc_binary(struct linux_binprm *bprm)
bprm->file = interp_file;
if (fmt->flags & MISC_FMT_CREDENTIALS) {
loff_t pos = 0;
/*
* No need to call prepare_binprm(), it's already been
* done. bprm->buf is stale, update from interp_file.
*/
memset(bprm->buf, 0, BINPRM_BUF_SIZE);
retval = kernel_read(bprm->file, 0, bprm->buf, BINPRM_BUF_SIZE);
retval = kernel_read(bprm->file, bprm->buf, BINPRM_BUF_SIZE,
&pos);
} else
retval = prepare_binprm(bprm);