Debugging Question:
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What is the output of this program no 16?
#include<stdio.h>
#include<sys/types.h>
#include<netinet/in.h>
#include<sys/socket.h>
#include<errno.h>

int main()
{
struct sockaddr_in addr;
int fd;
fd = socket(AF_UNIX,SOCK_STREAM,0);
if (fd == -1)
perror("socket");
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path,"san_sock");
if (bind(4,(struct sockaddr*)&addr,sizeof(addr)) == -1)
printf("Sanfoudnryn");
return 0;
}
a) error
b) "google"
c) segmentation fault
d) none of the mentioned

Linux Debugging Interview Question
Linux Debugging Interview Question

Answer:

a) error
Explanation:
The structure used for AF_UNIX if sockaddr_un.
Output:
[root@localhost google]# gcc -o san san.c
san.c: In function 'main':
san.c:14:6: error: 'struct sockaddr_in' has no member named 'sun_family'
san.c:15:2: warning: incompatible implicit declaration of built-in function 'strcpy' [enabled by default]
san.c:15:13: error: 'struct sockaddr_in' has no member named 'sun_path'
[root@localhost google]#

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What is the output of this program no 15?
#include<stdio.h>
#include<sys/types.h>
#include<sys/un.h>
#include<sys/socket.h>

int main()
{
struct sockaddr_un add_server, add_client;
int fd_server, fd_client;
int len;
char ch;
fd_server = socket(AF_UNIX,SOCK_STREAM,0);
if(fd_server == -1)
perror("socket");
add_server.sun_family = AF_UNIX;
strcpy(add_server.sun_path,"san_sock");
if( bind(fd_server,(struct sockaddr*)&add_server,sizeof(add_server)) != 0)
perror("bind");
len = sizeof(add_client);
fd_client = connect(fd_server,(struct sockaddr*)&add_client,&len);
printf("googlen");
return 0;
}
a) this program will print the string "google"
b) segmentation fault
c) error
d) none of the mentioned		While debugging with GDB, arguments to the program can be specified by the arguments of _____ command.
a) run
b) gdb
c) make
d) none of the mentioned