Re: 2 problems.
Re: 2 problems.
- Subject: Re: 2 problems.
- From: Steve Checkoway <email@hidden>
- Date: Mon, 3 Jan 2005 08:01:57 -0800
On Jan 2, 2005, at 9:11 PM, D.Walsh wrote:
problem #1
<snip>
This really doesn't belong on on this list but this seems to work:
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <grp.h>
#include <pwd.h>
int main(int argc, char *argv[])
{
if (argc != 2)
return 1;
const char *const path = "/etc/hostconfig";
FILE *fp = fopen(path, "r");
char template[] = "/tmp/temp.XXXXXX";
int fd;
FILE *temp;
if (!fp)
return 2;
fd = mkstemp(template);
if (fd == -1)
{
fclose(fp);
return 3;
}
temp = fdopen(fd, "w");
if (!temp)
{
fclose(fp);
close(fd);
return 4;
}
char buffer[1024]; /* quite a long line */
bool match = false;
while (fgets(buffer, sizeof(buffer), fp))
{
if (strncmp("MAILTRANSPORT=", buffer, strlen("MAILTRANSPORT=")))
fputs(buffer, temp);
else
{
fprintf(temp, "MAILTRANSPORT=%s\n", argv[1]);
match = true;
}
}
if (!match)
fprintf(temp, "MAILTRANSPORT=%s\n", argv[1]);
fclose(temp); /* no need to close(fd) */
fclose(fp);
if (rename(template, path))
return 5;
if (chmod(path, 0644))
return 6;
struct group *grp = getgrnam("wheel");
struct passwd *user = getpwnam("root");
if (!grp || !user)
return 7;
if (chown(path, user->pw_uid, grp->gr_gid))
return 8;
return 0;
}
problem #2
Others answered this.
- Steve
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| | >2 problems. (From: "D.Walsh" <email@hidden>) |