sys_fgetxattr  [fs/xattr.c]


Retrieves an extended attribute value.
Extended attributes are name:value pairs associated with inodes (files, directories, symlinks, etc). They are extensions to the normal attributes which are associated with all inodes in the system (i.e. the sys_stat data).

This system call is identical to sys_getxattr except that an open file descriptor (as returned by sys_open) is interrogated in place of path.

Arguments

eax 231
ebx An open file descriptor.
ecx Pointer to a null-terminated string that specifies the name. The name attribute includes a namespace prefix; there may be several, disjoint namespaces associated with an individual inode.
edx Pointer to a buffer which will receive the value data.
esi Size of the buffer pointed by edx. If this value is 0, then the current size of the named extended attribute will be returned without actually filling the buffer.

Return values

If the system call succeeds the return value is a positive number indicating the size of the extended attribute value.
If the system call fails the return value is one of the following errno values:

-ENOATTR The named attribute does not exist, or the process has no access to this attribute.
-ERANGE Size of the buffer is too small to hold the result.
-ENOTSUP Extended attributes are not supported by the filesystem, or are disabled.
-EBADF File descriptor specified by ebx is invalid.
-ENOMEM Out of memory (i.e. kernel memory).

Remarks

n/a

Compatibility

n/a