opendisk(3) [netbsd man page]
OPENDISK(3) BSD Library Functions Manual OPENDISK(3) NAME
opendisk -- open a disk partition LIBRARY
System Utilities Library (libutil, -lutil) SYNOPSIS
#include <util.h> int opendisk(const char *path, int flags, char *buf, size_t buflen, int iscooked); DESCRIPTION
opendisk() opens path, for reading and/or writing as specified by the argument flags using open(2), and the file descriptor is returned to the caller. buf is used to store the resultant filename. buflen is the size, in bytes, of the array referenced by buf (usually MAXPATHLEN bytes). iscooked controls which paths in /dev are tried. opendisk() attempts to open the following variations of path, in order: path The pathname as given. pathX path with a suffix of 'X', where 'X' represents the raw partition of the device, as determined by getrawpartition(3), usually ``c''. If path does not contain a slash (``/''), the following variations are attempted: - If iscooked is zero: /dev/rpath path with a prefix of ``/dev/r''. /dev/rpathX path with a prefix of ``/dev/r'' and a suffix of 'X' (q.v.). - If iscooked is non-zero: /dev/path path with a prefix of ``/dev/''. /dev/pathX path with a prefix of ``/dev/'' and a suffix of 'X' (q.v.). RETURN VALUES
An open file descriptor, or -1 if the open(2) failed. ERRORS
opendisk() may set errno to one of the following values: [EINVAL] O_CREAT was set in flags, or getrawpartition(3) didn't return a valid partition. [EFAULT] buf was the NULL pointer. The opendisk() function may also set errno to any value specified by the open(2) function. SEE ALSO
open(2), getrawpartition(3) HISTORY
The opendisk() function first appeared in NetBSD 1.3. BSD
December 11, 2001 BSD
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statvfsdev(3C) statvfsdev(3C) NAME
statvfsdev(), fstatvfsdev() - get file system information SYNOPSIS
DESCRIPTION
returns information about the file system on the device file specified by path. The file system need not be mounted. returns similar information for an open file. The parameters for the and functions are as follows: path is a pointer to the name of the device file. (All directories listed in the path name must be searchable.) buf is a pointer to a structure, which is where the file status information is stored. fildes is a file descriptor for an open file, which is created with the successful completion of an or system call (see open(2), creat(2), dup(2), fcntl(2), or pipe(2)). buf is a pointer to a structure into which information is placed concerning the file system. The contents of the structure pointed to by buf are described in statvfs(2). returns the same information as above, but about the open device file referred to by file descriptor fildes. RETURN VALUE
Upon successful completion, and return zero. Otherwise, they return -1 and set the global variable to indicate the error. ERRORS
If fails, is set to one of the following values: Search permission is denied for a component of the path prefix. path points to an invalid address. Too many symbolic links are encountered during path-name translation. The maximum number of file descriptors allowed are currently open. The length of the specified path name exceeds bytes, or the length of a component of the path name exceeds bytes while is in effect. The system file table is full. The named file does not exist. A component of the path prefix is not a directory. The device specified by the named special file does not exist. Result would overflow one or more fields of the struct. If fails, is set to one of the following values: fildes is not a valid open file descriptor. filedes is invalid. When both and fail, is set to one of the following values: A system call was interrupted by a signal. The file specified by path or filedes does not contain a file system of any known type. Check with your system administrator to make sure the is running properly on your system. AUTHOR
and were developed by HP. SEE ALSO
bdf(1M), df(1M), stat(2), statvfs(2), fgetpos64(3S), thread_safety(5). statvfsdev(3C)