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getdelays.c: fix overrun

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A patch for getdelays.c that fixes a buffer overrun when you set -w.

Cc: <matt@bluehost.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Scott Wiersdorf 2007-05-08 00:30:25 -07:00 committed by Linus Torvalds
parent d1ab824be4
commit 7f76c40375
1 changed files with 2 additions and 4 deletions
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6
Documentation/accounting/getdelays.c
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@ -61,8 +61,6 @@ __u64 stime, utime;
#define MAX_MSG_SIZE 1024 #define MAX_MSG_SIZE 1024
/* Maximum number of cpus expected to be specified in a cpumask */ /* Maximum number of cpus expected to be specified in a cpumask */
#define MAX_CPUS 32 #define MAX_CPUS 32
/* Maximum length of pathname to log file */
#define MAX_FILENAME 256
struct msgtemplate { struct msgtemplate {
struct nlmsghdr n; struct nlmsghdr n;
@ -231,7 +229,7 @@ int main(int argc, char *argv[])
int count = 0; int count = 0;
int write_file = 0; int write_file = 0;
int maskset = 0; int maskset = 0;
char logfile[128]; char *logfile = NULL;
int loop = 0; int loop = 0;
struct msgtemplate msg; struct msgtemplate msg;
@ -251,7 +249,7 @@ int main(int argc, char *argv[])
print_io_accounting = 1; print_io_accounting = 1;
break; break;
case 'w': case 'w':
strncpy(logfile, optarg, MAX_FILENAME); logfile = strdup(optarg);
printf("write to file %s\n", logfile); printf("write to file %s\n", logfile);
write_file = 1; write_file = 1;
break; break;