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| author | Arnd Bergmann <arnd@arndb.de> | 2015-04-28 21:39:50 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2018-04-20 16:20:21 +0200 |
| commit | c2ab975c30f0c3d3efcd69c1f1b2baa831c9374f (patch) | |
| tree | 91a6ffc1ad88b4bd31c81ebc7a8c059cc0da0c51 /ipc/msg.c | |
| parent | 2a70b7879b84d471fd0e440f027bba310e0c1fb7 (diff) | |
| download | linux-c2ab975c30f0c3d3efcd69c1f1b2baa831c9374f.tar.gz linux-c2ab975c30f0c3d3efcd69c1f1b2baa831c9374f.tar.bz2 linux-c2ab975c30f0c3d3efcd69c1f1b2baa831c9374f.zip | |
y2038: ipc: Report long times to user space
The shmid64_ds/semid64_ds/msqid64_ds data structures have been extended
to contain extra fields for storing the upper bits of the time stamps,
this patch does the other half of the job and and fills the new fields on
32-bit architectures as well as 32-bit tasks running on a 64-bit kernel
in compat mode.
There should be no change for native 64-bit tasks.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'ipc/msg.c')
| -rw-r--r-- | ipc/msg.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/ipc/msg.c b/ipc/msg.c index 574f76c9a2ff..3b6545302598 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -537,6 +537,11 @@ static int msgctl_stat(struct ipc_namespace *ns, int msqid, p->msg_stime = msq->q_stime; p->msg_rtime = msq->q_rtime; p->msg_ctime = msq->q_ctime; +#ifndef CONFIG_64BIT + p->msg_stime_high = msq->q_stime >> 32; + p->msg_rtime_high = msq->q_rtime >> 32; + p->msg_ctime_high = msq->q_ctime >> 32; +#endif p->msg_cbytes = msq->q_cbytes; p->msg_qnum = msq->q_qnum; p->msg_qbytes = msq->q_qbytes; @@ -646,9 +651,12 @@ static int copy_compat_msqid_to_user(void __user *buf, struct msqid64_ds *in, struct compat_msqid64_ds v; memset(&v, 0, sizeof(v)); to_compat_ipc64_perm(&v.msg_perm, &in->msg_perm); - v.msg_stime = in->msg_stime; - v.msg_rtime = in->msg_rtime; - v.msg_ctime = in->msg_ctime; + v.msg_stime = lower_32_bits(in->msg_stime); + v.msg_stime_high = upper_32_bits(in->msg_stime); + v.msg_rtime = lower_32_bits(in->msg_rtime); + v.msg_rtime_high = upper_32_bits(in->msg_rtime); + v.msg_ctime = lower_32_bits(in->msg_ctime); + v.msg_ctime_high = upper_32_bits(in->msg_ctime); v.msg_cbytes = in->msg_cbytes; v.msg_qnum = in->msg_qnum; v.msg_qbytes = in->msg_qbytes; |