Remove unneeded stat calls.

Author: bmomjian

src/backend/libpq/hba.c

@@ -7,17 +7,17 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.18 1997/08/18 02:14:37 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.19 1997/08/27 03:48:31 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
 #include <pwd.h>
-#include <sys/stat.h>
+#include <sys/types.h>
+#include <fcntl.h>
 #include <sys/socket.h>
-#include <sys/types.h>    /* needed by in.h on Ultrix */
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <unistd.h>
@@ -299,8 +299,7 @@ find_hba_entry(const char DataDir[], const struct in_addr ip_addr,
   system.
 
 ---------------------------------------------------------------------------*/ 
-  int rc;
-  struct stat statbuf;
+  int fd;
 
   FILE *file;  /* The config file we have to read */
 
@@ -315,9 +314,9 @@ find_hba_entry(const char DataDir[], const struct in_addr ip_addr,
                                    strlen(OLD_CONF_FILE)+2)*sizeof(char));
   sprintf(old_conf_file, "%s/%s", DataDir, OLD_CONF_FILE);
 
-  rc = stat(old_conf_file, &statbuf);
-  if (rc == 0) {  
+  if ((fd = open(old_conf_file,O_RDONLY,0)) != -1) {
     /* Old config file exists.  Tell this guy he needs to upgrade. */
+    close(fd);
     sprintf(PQerrormsg,
             "A file exists by the name used for host-based authentication "
             "in prior releases of Postgres (%s).  The name and format of "

src/backend/utils/init/findbe.c

@@ -6,16 +6,16 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/utils/init/Attic/findbe.c,v 1.4 1997/08/12 20:16:12 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/utils/init/Attic/findbe.c,v 1.5 1997/08/27 03:48:38 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
 #include <stdio.h>
 #include <grp.h>
 #include <pwd.h>
 #include <string.h>
-#include <sys/stat.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <unistd.h>
 
 #include "postgres.h"

src/backend/utils/init/postinit.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.11 1997/08/19 21:35:50 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.12 1997/08/27 03:48:39 momjian Exp $
  *
  * NOTES
  *      InitPostgres() is the function called from PostgresMain
@@ -30,7 +30,6 @@
 #include <stdio.h>
 #include <string.h>
 #include <sys/file.h>
-#include <sys/stat.h>
 #include <sys/types.h>
 #include <math.h>
 #include <unistd.h>
@@ -79,15 +78,6 @@ static void InitUserid(void);
 
 static IPCKey           PostgresIpcKey;
 
-
-#ifndef private
-#ifndef EBUG
-#define private static
-#else   /* !defined(EBUG) */
-#define private
-#endif  /* !defined(EBUG) */
-#endif  /* !defined(private) */
-
 /* ----------------------------------------------------------------
  *                      InitPostgres support
  * ----------------------------------------------------------------
@@ -141,7 +131,7 @@ InitMyDatabaseId()
     sprintf(dbfname, "%s%cpg_database", DataDir, SEP_CHAR);
     fileflags = O_RDONLY;
 
-    if ((dbfd = open(dbfname, O_RDONLY, 0666)) < 0)
+    if ((dbfd = open(dbfname, O_RDONLY, 0)) < 0)
         elog(FATAL, "Cannot open %s", dbfname);
 
     pfree(dbfname);
@@ -261,24 +251,25 @@ static void
 DoChdirAndInitDatabaseNameAndPath(char *name) {
     char *reason;  
       /* Failure reason returned by some function.  NULL if no failure */
-    struct stat	statbuf;
+    int fd;
     char errormsg[1000];
 
-    if (stat(DataDir, &statbuf) < 0) 
+    if ((fd = open(DataDir, O_RDONLY,0)) == -1)
         sprintf(errormsg, "Database system does not exist.  "
                 "PGDATA directory '%s' not found.  Normally, you "
                 "create a database system by running initdb.",
                 DataDir);
     else {
         char myPath[MAXPGPATH];  /* DatabasePath points here! */
 
+    	close(fd);
         if (strlen(DataDir) + strlen(name) + 10 > sizeof(myPath))
             sprintf(errormsg, "Internal error in postinit.c: database "
                     "pathname exceeds maximum allowable length.");
         else {
             sprintf(myPath, "%s/base/%s", DataDir, name);
 
-            if (stat(myPath, &statbuf) < 0) 
+            if ((fd = open(myPath, O_RDONLY,0)) == -1)
                 sprintf(errormsg, 
                         "Database '%s' does not exist.  "
                         "(We know this because the directory '%s' "
@@ -288,6 +279,7 @@ DoChdirAndInitDatabaseNameAndPath(char *name) {
                         "of '%s/base/'.",
                         name, myPath, DataDir);
             else {
+            	close(fd);
                 ValidatePgVersion(DataDir, &reason);
                 if (reason != NULL) 
                     sprintf(errormsg, 

src/utils/version.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/utils/Attic/version.c,v 1.5 1997/07/28 00:57:08 momjian Exp $
+ *    $Header: /cvsroot/pgsql/src/utils/Attic/version.c,v 1.6 1997/08/27 03:48:50 momjian Exp $
  *
  * NOTES
  *	XXX eventually, should be able to handle version identifiers
@@ -63,42 +63,34 @@ ValidatePgVersion(const char *path, char **reason_p) {
     int	 fd;
     char version[4];
     char full_path[MAXPGPATH+1];
-    struct stat	statbuf;
 
     PathSetVersionFilePath(path, full_path);
 
-    if (stat(full_path, &statbuf) < 0) {
+    if ((fd = open(full_path, O_RDONLY,0)) == -1) {
         *reason_p = malloc(200);
-        sprintf(*reason_p, "File '%s' does not exist.", full_path);
+        sprintf(*reason_p, "File '%s' does not exist or no read permission.", full_path);
     } else {
-        fd = open(full_path, O_RDONLY, 0);
-        if (fd < 0) {
+        if (read(fd, version, 4) < 4 ||
+            !isascii(version[0]) || !isdigit(version[0]) ||
+            version[1] != '.' ||
+            !isascii(version[2]) || !isdigit(version[2]) ||
+            version[3] != '\n') {
+
             *reason_p = malloc(200);
-            sprintf(*reason_p, "Unable to open file '%s'.  Errno = %s (%d).",
-                    full_path, strerror(errno), errno);
+            sprintf(*reason_p, "File '%s' does not have a valid format "
+                    "for a PG_VERSION file.", full_path);
         } else {
-            if (read(fd, version, 4) < 4 ||
-                !isascii(version[0]) || !isdigit(version[0]) ||
-                version[1] != '.' ||
-                !isascii(version[2]) || !isdigit(version[2]) ||
-                version[3] != '\n') {
-
+            if (version[2] != '0' + PG_VERSION ||
+                version[0] != '0' + PG_RELEASE) {
                 *reason_p = malloc(200);
-                sprintf(*reason_p, "File '%s' does not have a valid format "
-                        "for a PG_VERSION file.", full_path);
-            } else {
-                if (version[2] != '0' + PG_VERSION ||
-                    version[0] != '0' + PG_RELEASE) {
-                    *reason_p = malloc(200);
-                    sprintf(*reason_p, 
-                            "Version number in file '%s' should be %d.%d, "
-                            "not %c.%c.",
-                            full_path, 
-                            PG_RELEASE, PG_VERSION, version[0], version[2]);
-                } else *reason_p = NULL;
-            }
-            close(fd);                
+                sprintf(*reason_p, 
+                        "Version number in file '%s' should be %d.%d, "
+                        "not %c.%c.",
+                        full_path, 
+                        PG_RELEASE, PG_VERSION, version[0], version[2]);
+            } else *reason_p = NULL;
         }
+        close(fd);                
     }
 }