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nusb/disk: adding identical partition is a no-op

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This commit is contained in:
cinap_lenrek 2015-05-30 22:24:55 +02:00
parent de3c058efb
commit 3ceedfd1e1
1 changed files with 5 additions and 1 deletions
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6
sys/src/cmd/nusb/disk/disk.c
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@ -75,7 +75,11 @@ addpart(Umsc *lun, char *name, vlong start, vlong end, ulong mode)
werrstr("bad partition boundaries"); werrstr("bad partition boundaries");
return -1; return -1;
} }
if(lookpart(lun, name) != nil) { p = lookpart(lun, name);
if(p != nil){
/* adding identical partition is no-op */
if(p->offset == start && p->length == end - start && p->mode == mode)
return 0;
werrstr("partition name already in use"); werrstr("partition name already in use");
return -1; return -1;
} }