46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
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/*
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* Copyright (c) 1992 1993 by the University of Southern California
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*
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* For copying and distribution information, please see the file <usc-copyr.h>
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*/
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#include <usc-copyr.h>
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#include <pfs.h>
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#include <pparse.h>
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static int out_ac(OUTPUT out, ACL ac);
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int
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out_acl(OUTPUT out, ACL acl)
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{
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int retval = PSUCCESS;
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/* This check helps us track down a possible bug involving occasional loops
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as a result of subtraction of ACL rights. */
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int num_times = 0; /* # of times through loop */
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ACL sentinel_acl = NULL; /* mark a sentinel after we've been
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through too many times */
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for (; acl; acl = acl->next) {
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if (acl == sentinel_acl)
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internal_error("Found an ACL with a cycle in it");
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if(++num_times == 100) sentinel_acl = acl;
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if (!retval) retval = out_ac(out, acl);
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}
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return retval;
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}
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/* Spits out an ACL line describing the ACL entry "ac". */
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static int
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out_ac(OUTPUT out, ACL ac)
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{
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extern char *acltypes[]; /* defined in lib/pfs/acltypes.c */
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qoprintf(out, "ACL %'s %'s %'s", acltypes[ac->acetype],
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(ac->atype ? ac->atype : ""),
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(ac->rights ? ac->rights : ""), 0);
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return out_sequence(out, ac->principals);
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}
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