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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1995-08-17 19:51:51 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1995-08-17 19:51:51 +0000 |
commit | b06e68ef1f6df69cc86d72356c3a002054a35fad (patch) | |
tree | 722b2da3cc83f1cf03019cab8cf895a509eb6801 /c/src/exec/libcsupport/include/rtems/libio.h | |
parent | variable length messages (diff) | |
download | rtems-b06e68ef1f6df69cc86d72356c3a002054a35fad.tar.bz2 |
Numerous miscellaneous features incorporated from Tony Bennett
(tbennett@divnc.com) including the following major additions:
+ variable length messages
+ named devices
+ debug monitor
+ association tables/variables
Diffstat (limited to 'c/src/exec/libcsupport/include/rtems/libio.h')
-rw-r--r-- | c/src/exec/libcsupport/include/rtems/libio.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/c/src/exec/libcsupport/include/rtems/libio.h b/c/src/exec/libcsupport/include/rtems/libio.h new file mode 100644 index 0000000000..f80a1954a3 --- /dev/null +++ b/c/src/exec/libcsupport/include/rtems/libio.h @@ -0,0 +1,101 @@ +/* + * @(#)libio.h 1.1 - 95/06/02 + * + * + * General purpose communication channel for RTEMS to allow UNIX/POSIX + * system call behavior on top of RTEMS IO devices. + * + * TODO + * stat(2) + * unlink(2) + * rename(2) + * + * $Id$ + */ + +#ifndef _RTEMS_LIBIO_H +#define _RTEMS_LIBIO_H + +typedef unsigned32 rtems_libio_offset_t; + +/* + * An open file data structure, indexed by 'fd' + * TODO: + * should really have a separate per/file data structure that this + * points to (eg: size, offset, driver, pathname should be in that) + */ + +typedef struct { + rtems_driver_name_t *driver; + rtems_libio_offset_t size; /* size of file */ + rtems_libio_offset_t offset; /* current offset into the file */ + unsigned32 flags; + char *pathname; /* opened pathname */ + Objects_Id sem; + unsigned32 data0; /* private to "driver" */ + unsigned32 data1; /* ... */ +} rtems_libio_t; + + +/* + * param block for read/write + * Note: it must include 'offset' instead of using iop's offset since + * we can have multiple outstanding i/o's on a device. + */ + +typedef struct { + rtems_libio_t *iop; + rtems_libio_offset_t offset; + unsigned8 *buffer; + unsigned32 count; + unsigned32 flags; + unsigned32 bytes_moved; +} rtems_libio_rw_args_t; + +/* + * param block for open/close + */ + +typedef struct { + rtems_libio_t *iop; + unsigned32 flags; + unsigned32 mode; +} rtems_libio_open_close_args_t; + +/* + * param block for ioctl + */ + +typedef struct { + rtems_libio_t *iop; + unsigned32 command; + void *buffer; + unsigned32 ioctl_return; +} rtems_libio_ioctl_args_t; + + +/* + * Values for 'flag' + */ + +#define LIBIO_FLAGS_NO_DELAY 0x0001 /* return immediately if no data */ +#define LIBIO_FLAGS_READ 0x0002 /* reading */ +#define LIBIO_FLAGS_WRITE 0x0004 /* writing */ +#define LIBIO_FLAGS_LINE_BUFFERED 0x0008 /* line buffered io (^h, ^u, etc) */ +#define LIBIO_FLAGS_OPEN 0x0100 /* device is open */ +#define LIBIO_FLAGS_APPEND 0x0200 /* all writes append */ +#define LIBIO_FLAGS_CREATE 0x0400 /* create file */ + +#define LIBIO_FLAGS_READ_WRITE (LIBIO_FLAGS_READ | LIBIO_FLAGS_WRITE) + +void rtems_libio_config(rtems_configuration_table *config, unsigned32 max_fds); +void rtems_libio_init(void); + +int __open(const char *pathname, unsigned32 flag, unsigned32 mode); +int __close(int fd); +int __read(int fd, void *buffer, unsigned32 count); +int __write(int fd, const void *buffer, unsigned32 count); +int __ioctl(int fd, unsigned32 command, void *buffer); +int __lseek(int fd, rtems_libio_offset_t offset, int whence); + +#endif /* _RTEMS_LIBIO_H */ |