diff options
Diffstat (limited to 'usr/src')
| -rw-r--r-- | usr/src/lib/libc/port/gen/nss_dbdefs.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/usr/src/lib/libc/port/gen/nss_dbdefs.c b/usr/src/lib/libc/port/gen/nss_dbdefs.c index 9dd9193fc9..ee526c5f3c 100644 --- a/usr/src/lib/libc/port/gen/nss_dbdefs.c +++ b/usr/src/lib/libc/port/gen/nss_dbdefs.c @@ -20,12 +20,10 @@ */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ -#pragma ident "%Z%%M% %I% %E% SMI" - #include "lint.h" #include <mtlib.h> #include <ctype.h> @@ -242,12 +240,16 @@ typedef struct { * necessitate re-testing for possible collisions. */ -#define DBOP_PRIME_HASH 223 +#define DBOP_PRIME_HASH 227 #define DBOP_HASH_TAG 0xf0000000 static int getXbyYdbopHASH[DBOP_PRIME_HASH] = { 0 }; static mutex_t getXbydbop_hash_lock = DEFAULTMUTEX; static int getXbyYdbop_hashed = 0; +/* + * If the size of getXbyY_to_dbop[] is changed then hash function must be + * corrected to be without collisions in nss_dbop_search(). + */ static getXbyY_to_dbop_t getXbyY_to_dbop[] = { /* NSS_MK_GETXYDBOP(ALIASES, ?, ?), */ NSS_MK_GETXYDBOPD(AUDITUSER, BYNAME, "auuser", "audituser", "n"), @@ -300,6 +302,7 @@ nss_dbop_search(const char *name, uint32_t dbop) uint32_t hval, g; const char *cp; int i, idx; + static const uint32_t hbits_tst = 0xf0000000; /* Uses a table size is known to have no collisions */ if (getXbyYdbop_hashed == 0) { @@ -310,7 +313,7 @@ nss_dbop_search(const char *name, uint32_t dbop) hval = 0; while (*cp) { hval = (hval << 4) + *cp++; - if ((g = (hval & 0xf00000000)) != 0) + if ((g = (hval & hbits_tst)) != 0) hval ^= g >> 24; hval &= ~g; } @@ -333,7 +336,7 @@ nss_dbop_search(const char *name, uint32_t dbop) hval = 0; while (*cp) { hval = (hval << 4) + *cp++; - if ((g = (hval & 0xf00000000)) != 0) + if ((g = (hval & hbits_tst)) != 0) hval ^= g >> 24; hval &= ~g; } |