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with the -t option (writing to /tmp) open files with O_CREAT|O_EXCL to overcome race conditions

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This commit is contained in:
Ben Collins 2000-04-24 16:36:55 +00:00
parent 0e96b390b0
commit 7fa830b754
2 changed files with 27 additions and 9 deletions
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14
clients/tools/ldapsearch.c
View file

@ -2,6 +2,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <ac/ctype.h>
#include <ac/signal.h>
@ -9,6 +10,14 @@
#include <ac/string.h>
#include <ac/time.h>
#include <ac/unistd.h>
#include <ac/errno.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <lber.h>
#include <ldap.h>
@ -464,12 +473,15 @@ void print_entry(
} else if (( bvals = ldap_get_values_len( ld, entry, a )) != NULL ) {
for ( i = 0; bvals[i] != NULL; i++ ) {
if ( vals2tmp ) {
int tmpfd;
sprintf( tmpfname, "/tmp/ldapsearch-%s-XXXXXX", a );
tmpfp = NULL;
if ( mktemp( tmpfname ) == NULL ) {
perror( tmpfname );
} else if (( tmpfp = fopen( tmpfname, "w")) == NULL ) {
} else if (( tmpfd = open( tmpfname, O_WRONLY|O_CREAT|O_EXCL, 0600 )) == -1 ) {
perror( tmpfname );
} else if (( tmpfp = fdopen( tmpfd, "w")) == NULL ) {
perror( tmpfname );
} else if ( fwrite( bvals[ i ]->bv_val,
bvals[ i ]->bv_len, 1, tmpfp ) == 0 ) {

22
clients/ud/edit.c
View file

@ -14,6 +14,9 @@
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <ac/signal.h>
#include <ac/string.h>
@ -40,7 +43,7 @@ static int print_attrs_and_values( FILE *fp, struct attribute *attrs, short fla
static int ovalues( char *attr );
static void write_entry( void );
static char *entry_temp_file;
static char entry_temp_file[L_tmpnam];
void
@ -113,7 +116,7 @@ load_editor( void )
{
FILE *fp;
char *cp, *editor = UD_DEFAULT_EDITOR;
static char template[MED_BUF_SIZE];
int tmpfd;
#ifndef HAVE_SPAWNLP
int pid;
int status;
@ -126,13 +129,16 @@ load_editor( void )
#endif
/* write the entry into a temp file */
(void) strcpy(template, "/tmp/udEdit.XXXXXX");
if ((entry_temp_file = mktemp(template)) == NULL) {
perror("mktemp");
return(-1);
if (tmpnam(entry_temp_file) == NULL) {
perror("tmpnam");
return -1;
}
if ((fp = fopen(entry_temp_file, "w")) == NULL) {
perror("fopen");
if ((tmpfd = open(entry_temp_file, O_WRONLY|O_CREAT|O_EXCL, 0600)) == -1) {
perror(entry_temp_file);
return -1;
}
if ((fp = fdopen(tmpfd, "w")) == NULL) {
perror("fdopen");
return(-1);
}
fprintf(fp, "## Directory entry of %s\n", Entry.name);