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Shell Programming and Scripting
To display VTOC information
Post 57563 by gold4u on Tuesday 2nd of November 2004 03:47:52 AM
11-02-2004
To display VTOC information
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LEARN ABOUT SUNOS
write_vtoc
read_vtoc(3EXT) Extended Library Functions read_vtoc(3EXT) NAME
read_vtoc, write_vtoc - read and write a disk's VTOC SYNOPSIS
cc [ flag ... ] file ... -ladm [ library ... ] #include <sys/vtoc.h> int read_vtoc(int fd, struct vtoc *vtoc); int write_vtoc(int fd, struct vtoc *vtoc); DESCRIPTION
The read_vtoc() function returns the VTOC (volume table of contents) structure that is stored on the disk associated with the open file descriptor fd. The write_vtoc() function stores the VTOC structure on the disk associated with the open file descriptor fd. The fd argument refers to any slice on a raw disk. RETURN VALUES
Upon successful completion, read_vtoc() returns a positive integer indicating the slice index associated with the open file descriptor. Otherwise, it returns a negative integer indicating one of the following errors: VT_EIO An I/O error occurred. VT_ENOTSUP This operation is not supported on this disk. VT_ERROR An unknown error occurred. Upon successful completion, write_vtoc() returns 0. Otherwise, it returns a negative integer indicating one of the following errors: VT_EINVAL The VTOC contains an incorrect field. VT_EIO An I/O error occurred. VT_ENOTSUP This operation is not supported on this disk. VT_ERROR An unknown error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
fmthard(1M), format(1M), prtvtoc(1M), ioctl(2), efi_alloc_and_init(3EXT), attributes(5), dkio(7I) BUGS
The write_vtoc() function cannot write a VTOC on an unlabeled disk. Use format(1M) for this purpose. SunOS 5.10 25 Jul 2002 read_vtoc(3EXT)