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hw/9pfs: File ownership and others

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Add file ownership interfaces like chmod/chown, utime update, rename,
remove and truncating files for proxy FS

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
M. Mohan Kumar 2011-12-14 13:58:45 +05:30 • committed by Aneesh Kumar K.V
parent b178adc3e7
commit ea75fc4ec5
4 changed files with 214 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

83
fsdev/virtfs-proxy-helper.c
View file

@ -599,6 +599,12 @@ static int process_reply(int sock, int type,
case T_MKDIR:
case T_SYMLINK:
case T_LINK:
case T_CHMOD:
case T_CHOWN:
case T_TRUNCATE:
case T_UTIME:
case T_RENAME:
case T_REMOVE:
if (send_status(sock, out_iovec, retval) < 0) {
return -1;
}
@ -620,7 +626,10 @@ static int process_reply(int sock, int type,
static int process_requests(int sock)
{
int retval = 0;
uint64_t offset;
ProxyHeader header;
int mode, uid, gid;
struct timespec spec[2];
V9fsString oldpath, path;
struct iovec in_iovec, out_iovec;
@ -673,6 +682,80 @@ static int process_requests(int sock)
case T_READLINK:
retval = do_readlink(&in_iovec, &out_iovec);
break;
case T_CHMOD:
v9fs_string_init(&path);
retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ,
"sd", &path, &mode);
if (retval > 0) {
retval = chmod(path.data, mode);
if (retval < 0) {
retval = -errno;
}
}
v9fs_string_free(&path);
break;
case T_CHOWN:
v9fs_string_init(&path);
retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "sdd", &path,
&uid, &gid);
if (retval > 0) {
retval = lchown(path.data, uid, gid);
if (retval < 0) {
retval = -errno;
}
}
v9fs_string_free(&path);
break;
case T_TRUNCATE:
v9fs_string_init(&path);
retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "sq",
&path, &offset);
if (retval > 0) {
retval = truncate(path.data, offset);
if (retval < 0) {
retval = -errno;
}
}
v9fs_string_free(&path);
break;
case T_UTIME:
v9fs_string_init(&path);
retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "sqqqq", &path,
&spec[0].tv_sec, &spec[0].tv_nsec,
&spec[1].tv_sec, &spec[1].tv_nsec);
if (retval > 0) {
retval = qemu_utimens(path.data, spec);
if (retval < 0) {
retval = -errno;
}
}
v9fs_string_free(&path);
break;
case T_RENAME:
v9fs_string_init(&path);
v9fs_string_init(&oldpath);
retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ,
"ss", &oldpath, &path);
if (retval > 0) {
retval = rename(oldpath.data, path.data);
if (retval < 0) {
retval = -errno;
}
}
v9fs_string_free(&oldpath);
v9fs_string_free(&path);
break;
case T_REMOVE:
v9fs_string_init(&path);
retval = proxy_unmarshal(&in_iovec, PROXY_HDR_SZ, "s", &path);
if (retval > 0) {
retval = remove(path.data);
if (retval < 0) {
retval = -errno;
}
}
v9fs_string_free(&path);
break;
default:
goto err_out;
break;