diff options
Diffstat (limited to 'StdLib/LibC/Uefi/Xform.c')
| -rw-r--r-- | StdLib/LibC/Uefi/Xform.c | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/StdLib/LibC/Uefi/Xform.c b/StdLib/LibC/Uefi/Xform.c index 6b15da3563..ecf51d6b0f 100644 --- a/StdLib/LibC/Uefi/Xform.c +++ b/StdLib/LibC/Uefi/Xform.c @@ -57,8 +57,9 @@ Oflags2EFI( int oflags ) return flags;
}
-/* Transform the permissions flags from the open() call into the
- Attributes bits needed by UEFI.
+/* Transform the permissions flags into their equivalent UEFI File Attribute bits.
+ This transformation is most frequently used when translating attributes for use
+ by the UEFI EFI_FILE_PROTOCOL.SetInfo() function.
The UEFI File attributes are:
// ******************************************************
@@ -72,27 +73,40 @@ Oflags2EFI( int oflags ) #define EFI_FILE_ARCHIVE 0x0000000000000020
#define EFI_FILE_VALID_ATTR 0x0000000000000037
- The input permission flags consist of two groups:
- ( S_IRUSR | S_IRGRP | S_IROTH ) -- S_ACC_READ
- ( S_IWUSR | S_IWGRP | S_IWOTH ) -- S_ACC_WRITE
-
- The only thing we can set, at this point, is whether or not
- this is a SYSTEM file. If the group and other bits are
- zero and the user bits are non-zero then set SYSTEM. Otherwise
- the attributes are zero.
-
- The attributes can be set later using fcntl().
+ The input permission flags consist of the following flags:
+ O_RDONLY -- open for reading only
+ O_WRONLY -- open for writing only
+ O_RDWR -- open for reading and writing
+ O_ACCMODE -- mask for above modes
+ O_NONBLOCK -- no delay
+ O_APPEND -- set append mode
+ O_CREAT -- create if nonexistent
+ O_TRUNC -- truncate to zero length
+ O_EXCL -- error if already exists
+ O_HIDDEN -- Hidden file attribute
+ O_SYSTEM -- System file attribute
+ O_ARCHIVE -- Archive file attribute
*/
UINT64
Omode2EFI( int mode)
{
UINT64 flags = 0;
- if((mode & (S_IRWXG | S_IRWXO)) == 0) {
- if((mode & S_IRWXU) != 0) {
- // Only user permissions so set system
- flags = EFI_FILE_SYSTEM;
+ /* File is Read-Only. */
+ if((mode & O_ACCMODE) == 0) {
+ flags = EFI_FILE_READ_ONLY;
+ }
+ /* Set the Hidden attribute. */
+ if((mode & O_HIDDEN) != 0) {
+ flags |= EFI_FILE_HIDDEN;
+ }
+ /* Set the System attribute. */
+ if((mode & O_SYSTEM) != 0) {
+ flags |= EFI_FILE_SYSTEM;
}
+ /* Set the Archive attribute. */
+ if((mode & O_ARCHIVE) != 0) {
+ flags |= EFI_FILE_ARCHIVE;
}
return flags;
}
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