xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nfsd: add a "GetVersion" upcall for nfsdcld

Browse Source 
Add a "GetVersion" upcall to allow nfsd to determine the maximum upcall
version that the nfsdcld userspace daemon supports.  If the daemon
responds with -EOPNOTSUPP, then we know it only supports v1.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Scott Mayhew
2019-09-09 16:10:30 -04:00
committed by J. Bruce Fields
parent bbf2f09883
commit 11a60d1592
2 changed files with 127 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
include/uapi/linux/nfsd/cld.h
View File

@@ -36,7 +36,8 @@ enum cld_command {
Cld_Remove, /* remove record of this cm_id */
Cld_Check, /* is this cm_id allowed? */
Cld_GraceDone, /* grace period is complete */
Cld_GraceStart,
Cld_GraceStart, /* grace start (upload client records) */
Cld_GetVersion, /* query max supported upcall version */
};
/* representation of long-form NFSv4 client ID */
@@ -54,7 +55,15 @@ struct cld_msg {
union {
__s64 cm_gracetime; /* grace period start time */
struct cld_name cm_name;
__u8 cm_version; /* for getting max version */
} __attribute__((packed)) cm_u;
} __attribute__((packed));
struct cld_msg_hdr {
__u8 cm_vers; /* upcall version */
__u8 cm_cmd; /* upcall command */
__s16 cm_status; /* return code */
__u32 cm_xid; /* transaction id */
} __attribute__((packed));
#endif /* !_NFSD_CLD_H */