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Made official exclusive==2 with burn_preset_device_open()

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Thomas Schmitt 2006-09-28 07:51:38 +00:00
parent ebcfd03755
commit a53c0a2fa2
1 changed files with 4 additions and 1 deletions
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trunk/libburn/libburn.h
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@ -404,10 +404,13 @@ void burn_set_verbosity(int level);
after burn_initialize() and before any bus scan. But not mandatory at all. after burn_initialize() and before any bus scan. But not mandatory at all.
Parameter value 1 enables a feature, 0 disables. Parameter value 1 enables a feature, 0 disables.
Default is (1,0,0). Have a good reason before you change it. Default is (1,0,0). Have a good reason before you change it.
@param exclusive Try to open only devices which are not marked as busy @param exclusive 1 = Try to open only devices which are not marked as busy
and try to mark them busy if opened sucessfully. (O_EXCL) and try to mark them busy if opened sucessfully. (O_EXCL)
There are kernels which simply don't care about O_EXCL. There are kernels which simply don't care about O_EXCL.
Some have it off, some have it on, some are switchable. Some have it off, some have it on, some are switchable.
2 = in case of a SCSI device, also try to open exclusively
the matching /dev/sr, /dev/scd and /dev/st .
0 = no attempt to make drive access exclusive.
@param blocking Try to wait for drives which do not open immediately but @param blocking Try to wait for drives which do not open immediately but
also do not return an error as well. (O_NONBLOCK) also do not return an error as well. (O_NONBLOCK)
This might stall indefinitely with /dev/hdX hard disks. This might stall indefinitely with /dev/hdX hard disks.