volmgt_release(3volmgt) [sunos man page]
volmgt_release(3VOLMGT) Volume Management Library Functions volmgt_release(3VOLMGT) NAME
volmgt_release - release removable media device reservation SYNOPSIS
cc [ flag ... ] file ... -lvolmgt [ library ... ] #include <volmgt.h> int volmgt_release(char *dev); DESCRIPTION
The volmgt_release() routine releases the removable media device reservation specified as dev. See volmgt_acquire(3VOLMGT) for a descrip- tion of dev. If dev is reserved by the caller, volmgt_release() updates the internal device reservation database to indicate that the device is no longer reserved. If the requested device is reserved by another process, the release attempt fails and errno is set to 0. RETURN VALUES
Upon successful completion, volmgt_release returns a non-zero value. Upon failure, 0 is returned. ERRORS
On failure, volmgt_release() returns 0, and sets errno for one of the following conditions: EINVAL dev was invalid or missing. EBUSY dev was not reserved by the caller. EXAMPLES
Example 1: Using volmgt_release() In the following example, Volume Management is running, and the first floppy drive is reserved, accessed and released. #include <volmgt.h> char *errp; if (!volmgt_acquire("floppy0", "FileMgr", 0, &errp, NULL)) { /* handle error case */ ... } /* floppy acquired - now access it */ if (!volmgt_release("floppy0")) { /* handle error case */ ... } ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ SEE ALSO
vold(1M), volmgt_acquire(3VOLMGT), attributes(5) SunOS 5.10 11 Dec 1996 volmgt_release(3VOLMGT)
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volmgt_running(3VOLMGT) Volume Management Library Functions volmgt_running(3VOLMGT) NAME
volmgt_running - return whether or not volume management is running SYNOPSIS
cc [ flag ... ] file ... -lvolmgt [ library ... ] #include <volmgt.h> int volmgt_running(void); DESCRIPTION
This function is obsolete. The management of removable media by the Volume Management feature, including vold, has been replaced by soft- ware that supports the Hardware Abstraction Layer (HAL). Programmatic support for HAL is through the HAL APIs, which are documented on the HAL web site. See hal(5). volmgt_running() tells whether or not Volume Management is running. RETURN VALUES
volmgt_running() always returns 0 indicating Volume Management (as implemented by vold) is not running. ERRORS
volmgt_running() will fail, returning 0, if a stat(2) or open(2) of /dev/volctl fails, or if any of the following is true: ENXIO Volume Management is not running. EINTR An interrupt signal was detected while checking to see if Volume Management was running. EXAMPLES
Example 1 Using volmgt_running() To see if Volume Management is running: if (volmgt_running() != 0) { (void) printf("Volume Management is running "); } else { (void) printf("Volume Management is NOT running "); } ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ |Interface Stability |Obsolete | +-----------------------------+-----------------------------+ SEE ALSO
cc(1B), open(2), stat(2), volmgt_check(3VOLMGT), volmgt_inuse(3VOLMGT), attributes(5), hal(5) NOTES
Volume Management must be running for many of the Volume Management library routines to work. SunOS 5.11 8 Mar 2007 volmgt_running(3VOLMGT)