diff options
author | 2016-05-18 13:18:31 +0300 | |
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committer | 2016-05-18 13:42:15 +0300 | |
commit | 437fd90c0250dee670290f9b714253671a990160 (patch) | |
tree | b871786c360704244a07411c69fb58da9ead4a06 /qemu/hw/9pfs/9p-posix-acl.c | |
parent | 5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff) |
These changes are the raw update to qemu-2.6.
Collission happened in the following patches:
migration: do cleanup operation after completion(738df5b9)
Bug fix.(1750c932f86)
kvmclock: add a new function to update env->tsc.(b52baab2)
The code provided by the patches was already in the upstreamed
version.
Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/hw/9pfs/9p-posix-acl.c')
-rw-r--r-- | qemu/hw/9pfs/9p-posix-acl.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/qemu/hw/9pfs/9p-posix-acl.c b/qemu/hw/9pfs/9p-posix-acl.c new file mode 100644 index 000000000..ec003181c --- /dev/null +++ b/qemu/hw/9pfs/9p-posix-acl.c @@ -0,0 +1,184 @@ +/* + * 9p system.posix* xattr callback + * + * Copyright IBM, Corp. 2010 + * + * Authors: + * Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qemu/xattr.h" +#include "9p.h" +#include "fsdev/file-op-9p.h" +#include "9p-xattr.h" + +#define MAP_ACL_ACCESS "user.virtfs.system.posix_acl_access" +#define MAP_ACL_DEFAULT "user.virtfs.system.posix_acl_default" +#define ACL_ACCESS "system.posix_acl_access" +#define ACL_DEFAULT "system.posix_acl_default" + +static ssize_t mp_pacl_getxattr(FsContext *ctx, const char *path, + const char *name, void *value, size_t size) +{ + char *buffer; + ssize_t ret; + + buffer = rpath(ctx, path); + ret = lgetxattr(buffer, MAP_ACL_ACCESS, value, size); + g_free(buffer); + return ret; +} + +static ssize_t mp_pacl_listxattr(FsContext *ctx, const char *path, + char *name, void *value, size_t osize) +{ + ssize_t len = sizeof(ACL_ACCESS); + + if (!value) { + return len; + } + + if (osize < len) { + errno = ERANGE; + return -1; + } + + /* len includes the trailing NUL */ + memcpy(value, ACL_ACCESS, len); + return 0; +} + +static int mp_pacl_setxattr(FsContext *ctx, const char *path, const char *name, + void *value, size_t size, int flags) +{ + char *buffer; + int ret; + + buffer = rpath(ctx, path); + ret = lsetxattr(buffer, MAP_ACL_ACCESS, value, size, flags); + g_free(buffer); + return ret; +} + +static int mp_pacl_removexattr(FsContext *ctx, + const char *path, const char *name) +{ + int ret; + char *buffer; + + buffer = rpath(ctx, path); + ret = lremovexattr(buffer, MAP_ACL_ACCESS); + if (ret == -1 && errno == ENODATA) { + /* + * We don't get ENODATA error when trying to remove a + * posix acl that is not present. So don't throw the error + * even in case of mapped security model + */ + errno = 0; + ret = 0; + } + g_free(buffer); + return ret; +} + +static ssize_t mp_dacl_getxattr(FsContext *ctx, const char *path, + const char *name, void *value, size_t size) +{ + char *buffer; + ssize_t ret; + + buffer = rpath(ctx, path); + ret = lgetxattr(buffer, MAP_ACL_DEFAULT, value, size); + g_free(buffer); + return ret; +} + +static ssize_t mp_dacl_listxattr(FsContext *ctx, const char *path, + char *name, void *value, size_t osize) +{ + ssize_t len = sizeof(ACL_DEFAULT); + + if (!value) { + return len; + } + + if (osize < len) { + errno = ERANGE; + return -1; + } + + /* len includes the trailing NUL */ + memcpy(value, ACL_DEFAULT, len); + return 0; +} + +static int mp_dacl_setxattr(FsContext *ctx, const char *path, const char *name, + void *value, size_t size, int flags) +{ + char *buffer; + int ret; + + buffer = rpath(ctx, path); + ret = lsetxattr(buffer, MAP_ACL_DEFAULT, value, size, flags); + g_free(buffer); + return ret; +} + +static int mp_dacl_removexattr(FsContext *ctx, + const char *path, const char *name) +{ + int ret; + char *buffer; + + buffer = rpath(ctx, path); + ret = lremovexattr(buffer, MAP_ACL_DEFAULT); + if (ret == -1 && errno == ENODATA) { + /* + * We don't get ENODATA error when trying to remove a + * posix acl that is not present. So don't throw the error + * even in case of mapped security model + */ + errno = 0; + ret = 0; + } + g_free(buffer); + return ret; +} + + +XattrOperations mapped_pacl_xattr = { + .name = "system.posix_acl_access", + .getxattr = mp_pacl_getxattr, + .setxattr = mp_pacl_setxattr, + .listxattr = mp_pacl_listxattr, + .removexattr = mp_pacl_removexattr, +}; + +XattrOperations mapped_dacl_xattr = { + .name = "system.posix_acl_default", + .getxattr = mp_dacl_getxattr, + .setxattr = mp_dacl_setxattr, + .listxattr = mp_dacl_listxattr, + .removexattr = mp_dacl_removexattr, +}; + +XattrOperations passthrough_acl_xattr = { + .name = "system.posix_acl_", + .getxattr = pt_getxattr, + .setxattr = pt_setxattr, + .listxattr = pt_listxattr, + .removexattr = pt_removexattr, +}; + +XattrOperations none_acl_xattr = { + .name = "system.posix_acl_", + .getxattr = notsup_getxattr, + .setxattr = notsup_setxattr, + .listxattr = notsup_listxattr, + .removexattr = notsup_removexattr, +}; |