30 lines
436 B
C
30 lines
436 B
C
#include <u.h>
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#include <libc.h>
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#include <bio.h>
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#include <ndb.h>
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/* remove a from t and free it */
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Ndbtuple*
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ndbdiscard(Ndbtuple *t, Ndbtuple *a)
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{
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Ndbtuple *nt;
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/* unchain a */
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for(nt = t; nt != nil; nt = nt->entry){
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if(nt->line == a)
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nt->line = a->line;
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if(nt->entry == a)
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nt->entry = a->entry;
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}
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/* a may be start of chain */
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if(t == a)
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t = a->entry;
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/* free a */
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a->entry = nil;
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ndbfree(a);
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return t;
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}
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