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vm/file-editor: connect /dev/null as stdin (#657)

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If stdin is closed (not connected to /dev/null) first opened file will get fd=0
and will be treated as stdin.
This commit is contained in:
Marek Marczykowski 2012-09-27 02:06:26 +02:00
parent 303d4ab042
commit 7a485ab7f9
1 changed files with 4 additions and 2 deletions
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6
qubes_rpc/vm-file-editor.c
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@ -57,7 +57,7 @@ main()
{ {
struct stat stat_pre, stat_post, session_stat; struct stat stat_pre, stat_post, session_stat;
char *filename = get_filename(); char *filename = get_filename();
int child, status, log_fd; int child, status, log_fd, null_fd;
char var[1024], val[4096]; char var[1024], val[4096];
FILE *env_file; FILE *env_file;
FILE *waiter_pidfile; FILE *waiter_pidfile;
@ -100,7 +100,9 @@ main()
perror("fork"); perror("fork");
exit(1); exit(1);
case 0: case 0:
close(0); null_fd = open("/dev/null", O_RDONLY);
dup2(null_fd, 0);
close(null_fd);
env_file = fopen("/tmp/qubes-session-env", "r"); env_file = fopen("/tmp/qubes-session-env", "r");
while(fscanf(env_file, "%1024[^=]=%4096[^\n]\n", var, val) == 2) { while(fscanf(env_file, "%1024[^=]=%4096[^\n]\n", var, val) == 2) {