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Merge branches 'misc.misc' and 'work.iov_iter' into for-linus

This commit is contained in:
Al Viro 2019-01-04 14:02:59 -05:00
parent 4addd2640f a40612ef0e f91528955d
commit e4f2283cc6
5 changed files with 74 additions and 47 deletions
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1
fs/aio.c
View File

@ -1436,6 +1436,7 @@ static int aio_prep_rw(struct kiocb *req, struct iocb *iocb)
ret = ioprio_check_cap(iocb->aio_reqprio);
if (ret) {
pr_debug("aio ioprio check cap error: %d\n", ret);
fput(req->ki_filp);
return ret;
}

3
fs/exportfs/expfs.c
View File

@ -77,7 +77,7 @@ static bool dentry_connected(struct dentry *dentry)
struct dentry *parent = dget_parent(dentry);
dput(dentry);
if (IS_ROOT(dentry)) {
if (dentry == parent) {
dput(parent);
return false;
}
@ -147,6 +147,7 @@ static struct dentry *reconnect_one(struct vfsmount *mnt,
tmp = lookup_one_len_unlocked(nbuf, parent, strlen(nbuf));
if (IS_ERR(tmp)) {
dprintk("%s: lookup failed: %d\n", __func__, PTR_ERR(tmp));
err = PTR_ERR(tmp);
goto out_err;
}
if (tmp != dentry) {

2
fs/sysv/inode.c
View File

@ -275,7 +275,7 @@ static int __sysv_write_inode(struct inode *inode, int wait)
}
}
brelse(bh);
return 0;
return err;
}
int sysv_write_inode(struct inode *inode, struct writeback_control *wbc)

86
lib/iov_iter.c
View File

@ -560,6 +560,44 @@ static size_t copy_pipe_to_iter(const void *addr, size_t bytes,
return bytes;
}
static __wsum csum_and_memcpy(void *to, const void *from, size_t len,
__wsum sum, size_t off)
{
__wsum next = csum_partial_copy_nocheck(from, to, len, 0);
return csum_block_add(sum, next, off);
}
static size_t csum_and_copy_to_pipe_iter(const void *addr, size_t bytes,
__wsum *csum, struct iov_iter *i)
{
struct pipe_inode_info *pipe = i->pipe;
size_t n, r;
size_t off = 0;
__wsum sum = *csum;
int idx;
if (!sanity(i))
return 0;
bytes = n = push_pipe(i, bytes, &idx, &r);
if (unlikely(!n))
return 0;
for ( ; n; idx = next_idx(idx, pipe), r = 0) {
size_t chunk = min_t(size_t, n, PAGE_SIZE - r);
char *p = kmap_atomic(pipe->bufs[idx].page);
sum = csum_and_memcpy(p + r, addr, chunk, sum, off);
kunmap_atomic(p);
i->idx = idx;
i->iov_offset = r + chunk;
n -= chunk;
off += chunk;
addr += chunk;
}
i->count -= bytes;
*csum = sum;
return bytes;
}
size_t _copy_to_iter(const void *addr, size_t bytes, struct iov_iter *i)
{
const char *from = addr;
@ -1368,17 +1406,15 @@ size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum,
err ? v.iov_len : 0;
}), ({
char *p = kmap_atomic(v.bv_page);
next = csum_partial_copy_nocheck(p + v.bv_offset,
(to += v.bv_len) - v.bv_len,
v.bv_len, 0);
sum = csum_and_memcpy((to += v.bv_len) - v.bv_len,
p + v.bv_offset, v.bv_len,
sum, off);
kunmap_atomic(p);
sum = csum_block_add(sum, next, off);
off += v.bv_len;
}),({
next = csum_partial_copy_nocheck(v.iov_base,
(to += v.iov_len) - v.iov_len,
v.iov_len, 0);
sum = csum_block_add(sum, next, off);
sum = csum_and_memcpy((to += v.iov_len) - v.iov_len,
v.iov_base, v.iov_len,
sum, off);
off += v.iov_len;
})
)
@ -1412,17 +1448,15 @@ bool csum_and_copy_from_iter_full(void *addr, size_t bytes, __wsum *csum,
0;
}), ({
char *p = kmap_atomic(v.bv_page);
next = csum_partial_copy_nocheck(p + v.bv_offset,
(to += v.bv_len) - v.bv_len,
v.bv_len, 0);
sum = csum_and_memcpy((to += v.bv_len) - v.bv_len,
p + v.bv_offset, v.bv_len,
sum, off);
kunmap_atomic(p);
sum = csum_block_add(sum, next, off);
off += v.bv_len;
}),({
next = csum_partial_copy_nocheck(v.iov_base,
(to += v.iov_len) - v.iov_len,
v.iov_len, 0);
sum = csum_block_add(sum, next, off);
sum = csum_and_memcpy((to += v.iov_len) - v.iov_len,
v.iov_base, v.iov_len,
sum, off);
off += v.iov_len;
})
)
@ -1438,8 +1472,12 @@ size_t csum_and_copy_to_iter(const void *addr, size_t bytes, __wsum *csum,
const char *from = addr;
__wsum sum, next;
size_t off = 0;
if (unlikely(iov_iter_is_pipe(i)))
return csum_and_copy_to_pipe_iter(addr, bytes, csum, i);
sum = *csum;
if (unlikely(iov_iter_is_pipe(i) || iov_iter_is_discard(i))) {
if (unlikely(iov_iter_is_discard(i))) {
WARN_ON(1); /* for now */
return 0;
}
@ -1455,17 +1493,15 @@ size_t csum_and_copy_to_iter(const void *addr, size_t bytes, __wsum *csum,
err ? v.iov_len : 0;
}), ({
char *p = kmap_atomic(v.bv_page);
next = csum_partial_copy_nocheck((from += v.bv_len) - v.bv_len,
p + v.bv_offset,
v.bv_len, 0);
sum = csum_and_memcpy(p + v.bv_offset,
(from += v.bv_len) - v.bv_len,
v.bv_len, sum, off);
kunmap_atomic(p);
sum = csum_block_add(sum, next, off);
off += v.bv_len;
}),({
next = csum_partial_copy_nocheck((from += v.iov_len) - v.iov_len,
v.iov_base,
v.iov_len, 0);
sum = csum_block_add(sum, next, off);
sum = csum_and_memcpy(v.iov_base,
(from += v.iov_len) - v.iov_len,
v.iov_len, sum, off);
off += v.iov_len;
})
)

29
scripts/selinux/genheaders/genheaders.c
View File

@ -19,8 +19,6 @@ struct security_class_mapping {
#include "classmap.h"
#include "initial_sid_to_string.h"
#define max(x, y) (((int)(x) > (int)(y)) ? x : y)
const char *progname;
static void usage(void)
@ -46,11 +44,9 @@ static char *stoupperx(const char *s)
int main(int argc, char *argv[])
{
int i, j, k;
int i, j;
int isids_len;
FILE *fout;
const char *needle = "SOCKET";
char *substr;
progname = argv[0];
@ -80,20 +76,14 @@ int main(int argc, char *argv[])
for (i = 0; secclass_map[i].name; i++) {
struct security_class_mapping *map = &secclass_map[i];
fprintf(fout, "#define SECCLASS_%s", map->name);
for (j = 0; j < max(1, 40 - strlen(map->name)); j++)
fprintf(fout, " ");
fprintf(fout, "%2d\n", i+1);
fprintf(fout, "#define SECCLASS_%-39s %2d\n", map->name, i+1);
}
fprintf(fout, "\n");
for (i = 1; i < isids_len; i++) {
const char *s = initial_sid_to_string[i];
fprintf(fout, "#define SECINITSID_%s", s);
for (j = 0; j < max(1, 40 - strlen(s)); j++)
fprintf(fout, " ");
fprintf(fout, "%2d\n", i);
fprintf(fout, "#define SECINITSID_%-39s %2d\n", s, i);
}
fprintf(fout, "\n#define SECINITSID_NUM %d\n", i-1);
fprintf(fout, "\nstatic inline bool security_is_socket_class(u16 kern_tclass)\n");
@ -101,9 +91,10 @@ int main(int argc, char *argv[])
fprintf(fout, "\tbool sock = false;\n\n");
fprintf(fout, "\tswitch (kern_tclass) {\n");
for (i = 0; secclass_map[i].name; i++) {
static char s[] = "SOCKET";
struct security_class_mapping *map = &secclass_map[i];
substr = strstr(map->name, needle);
if (substr && strcmp(substr, needle) == 0)
int len = strlen(map->name), l = sizeof(s) - 1;
if (len >= l && memcmp(map->name + len - l, s, l) == 0)
fprintf(fout, "\tcase SECCLASS_%s:\n", map->name);
}
fprintf(fout, "\t\tsock = true;\n");
@ -129,17 +120,15 @@ int main(int argc, char *argv[])
for (i = 0; secclass_map[i].name; i++) {
struct security_class_mapping *map = &secclass_map[i];
int len = strlen(map->name);
for (j = 0; map->perms[j]; j++) {
if (j >= 32) {
fprintf(stderr, "Too many permissions to fit into an access vector at (%s, %s).\n",
map->name, map->perms[j]);
exit(5);
}
fprintf(fout, "#define %s__%s", map->name,
map->perms[j]);
for (k = 0; k < max(1, 40 - strlen(map->name) - strlen(map->perms[j])); k++)
fprintf(fout, " ");
fprintf(fout, "0x%08xU\n", (1<<j));
fprintf(fout, "#define %s__%-*s 0x%08xU\n", map->name,
39-len, map->perms[j], 1U<<j);
}
}