diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/ipxe/xfer.h | 41 |
1 files changed, 16 insertions, 25 deletions
diff --git a/src/include/ipxe/xfer.h b/src/include/ipxe/xfer.h index 67da15f16..21614284b 100644 --- a/src/include/ipxe/xfer.h +++ b/src/include/ipxe/xfer.h @@ -18,21 +18,23 @@ struct io_buffer; struct sockaddr; struct net_device; -/** Basis positions for seek() events */ -enum seek_whence { - SEEK_CUR = 0, - SEEK_SET, -}; - /** Data transfer metadata */ struct xfer_metadata { - /** Position of data within stream */ - off_t offset; - /** Basis for data position + /** Flags + * + * This is the bitwise OR of zero or more @c XFER_FL_XXX + * constants. + */ + unsigned int flags; + /** Offset of data within stream * - * Must be one of @c SEEK_CUR or @c SEEK_SET. + * This is an absolute offset if the @c XFER_FL_ABS_OFFSET + * flag is set, otherwise a relative offset. (A freshly + * zeroed @c xfer_metadata structure therefore represents a + * relative offset of zero, i.e. no offset from the current + * position.) */ - int whence; + off_t offset; /** Source socket address, or NULL */ struct sockaddr *src; /** Destination socket address, or NULL */ @@ -41,19 +43,8 @@ struct xfer_metadata { struct net_device *netdev; }; -/** - * Describe seek basis - * - * @v whence Basis for new position - */ -static inline __attribute__ (( always_inline )) const char * -whence_text ( int whence ) { - switch ( whence ) { - case SEEK_CUR: return "CUR"; - case SEEK_SET: return "SET"; - default: return "INVALID"; - } -} +/** Offset is absolute */ +#define XFER_FL_ABS_OFFSET 0x0001 /* Data transfer interface operations */ @@ -89,6 +80,6 @@ extern int xfer_vprintf ( struct interface *intf, const char *format, va_list args ); extern int __attribute__ (( format ( printf, 2, 3 ) )) xfer_printf ( struct interface *intf, const char *format, ... ); -extern int xfer_seek ( struct interface *intf, off_t offset, int whence ); +extern int xfer_seek ( struct interface *intf, off_t offset ); #endif /* _IPXE_XFER_H */ |