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Adjust maximum file length in pklock.

This commit is contained in:
Renaud 2016-03-19 14:36:27 +08:00
parent a0ea6d07e6
commit 3af4ee19a2
1 changed files with 12 additions and 7 deletions
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19
pklock.c
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@ -20,7 +20,8 @@
#endif #endif
#include <errno.h> #include <errno.h>
#define MAXLOCK 512 /* Maximum file length name 255 */
#define MAXLOCK 256
#define MAXNAME 128 #define MAXNAME 128
#if defined(SVR4) && ! defined(__linux__) #if defined(SVR4) && ! defined(__linux__)
@ -44,11 +45,14 @@ int gethostname(char *name, int namelen)
char *dolock( const char *fname) char *dolock( const char *fname)
{ {
int fd, n; int fd, n;
static char lname[MAXLOCK], locker[MAXNAME + 1]; char lname[ MAXLOCK] ;
static char locker[ MAXNAME + 1] ;
int mask; int mask;
struct stat sbuf; struct stat sbuf;
strcat(strcpy(lname, fname), ".lock~"); strncpy( lname, fname, sizeof lname - 1 - 6) ;
lname[ sizeof lname - 1 - 6] = 0 ;
strcat( lname, ".lock~") ;
/* check that we are not being cheated, qname must point to */ /* check that we are not being cheated, qname must point to */
/* a regular file - even this code leaves a small window of */ /* a regular file - even this code leaves a small window of */
@ -111,11 +115,12 @@ char *dolock( const char *fname)
* *
*********************/ *********************/
char *undolock( const char *fname) char *undolock( const char *fname) {
{ char lname[ MAXLOCK] ;
static char lname[MAXLOCK];
strcat(strcpy(lname, fname), ".lock~"); strncpy( lname, fname, sizeof lname - 1 - 6) ;
lname[ sizeof lname - 1 - 6] = 0 ;
strcat( lname, ".lock~") ;
if (unlink(lname) != 0) { if (unlink(lname) != 0) {
if (errno == EACCES || errno == ENOENT) if (errno == EACCES || errno == ENOENT)
return NULL; return NULL;