diff options
Diffstat (limited to 'source4/ntvfs/posix/pvfs_xattr.c')
| -rw-r--r-- | source4/ntvfs/posix/pvfs_xattr.c | 128 |
1 files changed, 100 insertions, 28 deletions
diff --git a/source4/ntvfs/posix/pvfs_xattr.c b/source4/ntvfs/posix/pvfs_xattr.c index 24fa49108a..e086a019ba 100644 --- a/source4/ntvfs/posix/pvfs_xattr.c +++ b/source4/ntvfs/posix/pvfs_xattr.c @@ -25,7 +25,6 @@ #include "vfs_posix.h" #include "librpc/gen_ndr/ndr_xattr.h" - /* pull a xattr as a blob, from either a file or a file descriptor */ @@ -36,6 +35,7 @@ static NTSTATUS pull_xattr_blob(TALLOC_CTX *mem_ctx, size_t estimated_size, DATA_BLOB *blob) { +#if HAVE_XATTR_SUPPORT int ret; *blob = data_blob_talloc(mem_ctx, NULL, estimated_size); @@ -67,17 +67,20 @@ again: blob->length = ret; return NT_STATUS_OK; +#else + return NT_STATUS_NOT_SUPPORTED; +#endif } /* push a xattr as a blob, from either a file or a file descriptor */ -static NTSTATUS push_xattr_blob(TALLOC_CTX *mem_ctx, - const char *attr_name, +static NTSTATUS push_xattr_blob(const char *attr_name, const char *fname, int fd, const DATA_BLOB *blob) { +#if HAVE_XATTR_SUPPORT int ret; if (fd != -1) { @@ -90,22 +93,74 @@ static NTSTATUS push_xattr_blob(TALLOC_CTX *mem_ctx, } return NT_STATUS_OK; +#else + return NT_STATUS_NOT_SUPPORTED; +#endif } +/* + load a NDR structure from a xattr +*/ +static NTSTATUS pvfs_xattr_ndr_load(TALLOC_CTX *mem_ctx, + const char *fname, int fd, const char *attr_name, + void *p, ndr_pull_flags_fn_t pull_fn) +{ + NTSTATUS status; + DATA_BLOB blob; + + status = pull_xattr_blob(mem_ctx, attr_name, fname, + fd, XATTR_DOSATTRIB_ESTIMATED_SIZE, &blob); + if (!NT_STATUS_IS_OK(status)) { + return status; + } + + /* pull the blob */ + status = ndr_pull_struct_blob(&blob, mem_ctx, p, pull_fn); + + data_blob_free(&blob); + + return status; +} /* - fill in file attributes from extended attributes + save a NDR structure into a xattr */ -NTSTATUS pvfs_xattr_load(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd) +static NTSTATUS pvfs_xattr_ndr_save(const char *fname, int fd, const char *attr_name, + void *p, ndr_push_flags_fn_t push_fn) { + TALLOC_CTX *mem_ctx = talloc(NULL, 0); DATA_BLOB blob; NTSTATUS status; + + status = ndr_push_struct_blob(&blob, mem_ctx, p, (ndr_push_flags_fn_t)push_fn); + if (!NT_STATUS_IS_OK(status)) { + talloc_free(mem_ctx); + return status; + } + + status = push_xattr_blob(attr_name, fname, fd, &blob); + talloc_free(mem_ctx); + + return status; +} + + +/* + fill in file attributes from extended attributes +*/ +NTSTATUS pvfs_dosattrib_load(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd) +{ + NTSTATUS status; struct xattr_DosAttrib attrib; TALLOC_CTX *mem_ctx = talloc(name, 0); struct xattr_DosInfo1 *info1; - status = pull_xattr_blob(mem_ctx, XATTR_DOSATTRIB_NAME, name->full_name, - fd, XATTR_DOSATTRIB_ESTIMATED_SIZE, &blob); + if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) { + return NT_STATUS_OK; + } + + status = pvfs_xattr_ndr_load(mem_ctx, name->full_name, fd, XATTR_DOSATTRIB_NAME, + &attrib, (ndr_pull_flags_fn_t)ndr_pull_xattr_DosAttrib); /* if the filesystem doesn't support them, then tell pvfs not to try again */ if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) { @@ -126,14 +181,6 @@ NTSTATUS pvfs_xattr_load(struct pvfs_state *pvfs, struct pvfs_filename *name, in return status; } - /* pull the blob */ - status = ndr_pull_struct_blob(&blob, mem_ctx, &attrib, - (ndr_pull_flags_fn_t)ndr_pull_xattr_DosAttrib); - if (!NT_STATUS_IS_OK(status)) { - talloc_free(mem_ctx); - return status; - } - switch (attrib.version) { case 1: info1 = &attrib.info.info1; @@ -163,15 +210,16 @@ NTSTATUS pvfs_xattr_load(struct pvfs_state *pvfs, struct pvfs_filename *name, in /* - save the file attribute into into the xattr + save the file attribute into the xattr */ -NTSTATUS pvfs_xattr_save(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd) +NTSTATUS pvfs_dosattrib_save(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd) { struct xattr_DosAttrib attrib; struct xattr_DosInfo1 *info1; - TALLOC_CTX *mem_ctx = talloc(name, 0); - DATA_BLOB blob; - NTSTATUS status; + + if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) { + return NT_STATUS_OK; + } attrib.version = 1; info1 = &attrib.info.info1; @@ -183,15 +231,39 @@ NTSTATUS pvfs_xattr_save(struct pvfs_state *pvfs, struct pvfs_filename *name, in info1->create_time = name->dos.create_time; info1->change_time = name->dos.change_time; - status = ndr_push_struct_blob(&blob, mem_ctx, &attrib, - (ndr_push_flags_fn_t)ndr_push_xattr_DosAttrib); - if (!NT_STATUS_IS_OK(status)) { - talloc_free(mem_ctx); - return status; - } + return pvfs_xattr_ndr_save(name->full_name, fd, XATTR_DOSATTRIB_NAME, &attrib, + (ndr_push_flags_fn_t)ndr_push_xattr_DosAttrib); +} - status = push_xattr_blob(mem_ctx, XATTR_DOSATTRIB_NAME, name->full_name, fd, &blob); - talloc_free(mem_ctx); +/* + load the set of DOS EAs +*/ +NTSTATUS pvfs_doseas_load(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd, + struct xattr_DosEAs *eas) +{ + NTSTATUS status; + ZERO_STRUCTP(eas); + if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) { + return NT_STATUS_OK; + } + status = pvfs_xattr_ndr_load(eas, name->full_name, fd, XATTR_DOSEAS_NAME, + eas, (ndr_pull_flags_fn_t)ndr_pull_xattr_DosEAs); + if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) { + return NT_STATUS_OK; + } return status; } + +/* + save the set of DOS EAs +*/ +NTSTATUS pvfs_doseas_save(struct pvfs_state *pvfs, struct pvfs_filename *name, int fd, + struct xattr_DosEAs *eas) +{ + if (!(pvfs->flags & PVFS_FLAG_XATTR_ENABLE)) { + return NT_STATUS_OK; + } + return pvfs_xattr_ndr_save(name->full_name, fd, XATTR_DOSEAS_NAME, eas, + (ndr_push_flags_fn_t)ndr_push_xattr_DosEAs); +} |