diff options
author | Olof Johansson <olof@lixom.net> | 2013-01-16 19:58:08 -0800 |
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committer | Olof Johansson <olof@lixom.net> | 2013-01-16 19:58:58 -0800 |
commit | 5046e385b4426e229a6beb4bce480762af91a6fc (patch) | |
tree | 65b4bff2c913a18840b3c58892853d51b942ac43 /ipc/msgutil.c | |
parent | a73b59c51ab288d81b515b504790267f594884b8 (diff) | |
parent | b86dc0d8c12bbb9fed3f392c284bdc7114ce00c1 (diff) |
Merge branch 'v3.8-samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
From Kukjin Kim:
That branch fixes build error for S3C24XX/S3C64xx. And corrects dw-mshc
properties on EXYNOS5 DT and fixes IRQ mapping on Cragganmore board.
* 'v3.8-samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: S3C64XX: Fix up IRQ mapping for balblair on Cragganmore
ARM: dts: correct the dw-mshc timing properties as per binding
ARM: S3C64XX: Fix build error with CONFIG_S3C_DEV_FB disabled
+ Linux 3.8-rc3
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'ipc/msgutil.c')
-rw-r--r-- | ipc/msgutil.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/ipc/msgutil.c b/ipc/msgutil.c index 6471f1bdae9..ebfcbfa8b7f 100644 --- a/ipc/msgutil.c +++ b/ipc/msgutil.c @@ -102,7 +102,50 @@ out_err: free_msg(msg); return ERR_PTR(err); } +#ifdef CONFIG_CHECKPOINT_RESTORE +struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst) +{ + struct msg_msgseg *dst_pseg, *src_pseg; + int len = src->m_ts; + int alen; + + BUG_ON(dst == NULL); + if (src->m_ts > dst->m_ts) + return ERR_PTR(-EINVAL); + alen = len; + if (alen > DATALEN_MSG) + alen = DATALEN_MSG; + + dst->next = NULL; + dst->security = NULL; + + memcpy(dst + 1, src + 1, alen); + + len -= alen; + dst_pseg = dst->next; + src_pseg = src->next; + while (len > 0) { + alen = len; + if (alen > DATALEN_SEG) + alen = DATALEN_SEG; + memcpy(dst_pseg + 1, src_pseg + 1, alen); + dst_pseg = dst_pseg->next; + len -= alen; + src_pseg = src_pseg->next; + } + + dst->m_type = src->m_type; + dst->m_ts = src->m_ts; + + return dst; +} +#else +struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst) +{ + return ERR_PTR(-ENOSYS); +} +#endif int store_msg(void __user *dest, struct msg_msg *msg, int len) { int alen; |