#include "ubifs.h" static int ubifs_crypt_get_context(struct inode *inode, void *ctx, size_t len) { return ubifs_xattr_get(inode, UBIFS_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, len); } static int ubifs_crypt_set_context(struct inode *inode, const void *ctx, size_t len, void *fs_data) { return ubifs_xattr_set(inode, UBIFS_XATTR_NAME_ENCRYPTION_CONTEXT, ctx, len, 0); } static bool ubifs_crypt_empty_dir(struct inode *inode) { return ubifs_check_dir_empty(inode) == 0; } static unsigned int ubifs_crypt_max_namelen(struct inode *inode) { if (S_ISLNK(inode->i_mode)) return UBIFS_MAX_INO_DATA; else return UBIFS_MAX_NLEN; } static int ubifs_key_prefix(struct inode *inode, u8 **key) { static char prefix[] = "ubifs:"; *key = prefix; return sizeof(prefix) - 1; } int ubifs_encrypt(const struct inode *inode, struct ubifs_data_node *dn, unsigned int in_len, unsigned int *out_len, int block) { struct ubifs_info *c = inode->i_sb->s_fs_info; void *p = &dn->data; struct page *ret; unsigned int pad_len = round_up(in_len, UBIFS_CIPHER_BLOCK_SIZE); ubifs_assert(pad_len <= *out_len); dn->compr_size = cpu_to_le16(in_len); /* pad to full block cipher length */ if (pad_len != in_len) memset(p + in_len, 0, pad_len - in_len); ret = fscrypt_encrypt_page(inode, virt_to_page(&dn->data), pad_len, offset_in_page(&dn->data), block, GFP_NOFS); if (IS_ERR(ret)) { ubifs_err(c, "fscrypt_encrypt_page failed: %ld", PTR_ERR(ret)); return PTR_ERR(ret); } *out_len = pad_len; return 0; } int ubifs_decrypt(const struct inode *inode, struct ubifs_data_node *dn, unsigned int *out_len, int block) { struct ubifs_info *c = inode->i_sb->s_fs_info; int err; unsigned int clen = le16_to_cpu(dn->compr_size); unsigned int dlen = *out_len; if (clen <= 0 || clen > UBIFS_BLOCK_SIZE || clen > dlen) { ubifs_err(c, "bad compr_size: %i", clen); return -EINVAL; } ubifs_assert(dlen <= UBIFS_BLOCK_SIZE); err = fscrypt_decrypt_page(inode, virt_to_page(&dn->data), dlen, offset_in_page(&dn->data), block); if (err) { ubifs_err(c, "fscrypt_decrypt_page failed: %i", err); return err; } *out_len = clen; return 0; } struct fscrypt_operations ubifs_crypt_operations = { .flags = FS_CFLG_OWN_PAGES, .get_context = ubifs_crypt_get_context, .set_context = ubifs_crypt_set_context, .is_encrypted = __ubifs_crypt_is_encrypted, .empty_dir = ubifs_crypt_empty_dir, .max_namelen = ubifs_crypt_max_namelen, .key_prefix = ubifs_key_prefix, };
path: root/include/clocksource/timer-sp804.h
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authorPeter Zijlstra <peterz@infradead.org>2017-01-26 23:15:08 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-30 11:41:26 +0100
commit0b3589be9b98994ce3d5aeca52445d1f5627c4ba (patch)
tree85d0d9b3ac902af2c938b19a566884caf8d00323 /include/clocksource/timer-sp804.h
parenta76a82a3e38c8d3fb6499e3dfaeb0949241ab588 (diff)
perf/core: Fix PERF_RECORD_MMAP2 prot/flags for anonymous memory
Andres reported that MMAP2 records for anonymous memory always have their protection field 0. Turns out, someone daft put the prot/flags generation code in the file branch, leaving them unset for anonymous memory. Reported-by: Andres Freund <andres@anarazel.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Don Zickus <dzickus@redhat.com Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@kernel.org Cc: anton@ozlabs.org Cc: namhyung@kernel.org Cc: stable@vger.kernel.org # v3.16+ Fixes: f972eb63b100 ("perf: Pass protection and flags bits through mmap2 interface") Link: http://lkml.kernel.org/r/20170126221508.GF6536@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/clocksource/timer-sp804.h')