Flecart: /* 2019-02-15 */

2023-04-26T19:16:21Z

2019-02-15

Flecart: Created page with " = 2019-02-15 = == Esercizio 1 == === Proposta 1 (Da controllare) === ~~~~ #include #include #include #includ..."

2023-04-26T19:15:24Z

Created page with " = 2019-02-15 = == Esercizio 1 == === Proposta 1 (Da controllare) === ~~~~ <syntaxhighlight lang="C"> #include <stdio.h> #include <sys/types.h> #include <dirent.h> #includ..."

New page

= 2019-02-15 =

== Esercizio 1 ==

=== Proposta 1 (Da controllare) ===

[[User:Flecart|Flecart]] ([[User talk:Flecart|talk]]) 21:15, 26 April 2023 (CEST)

<syntaxhighlight lang="C">
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <sys/inotify.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>

// as docs said, return value is event + MAX_NAME of the file.
typedef struct event {
struct inotify_event ev;
char name[256 + 1];
} event_t;

char *get_name(char *dir_name, char *file_name) {
int dir_len = strlen(dir_name);
int file_len = strlen(file_name);
char *space = (char *) malloc(dir_len + file_len + 2);

strcpy(space, dir_name);
space[dir_len] = '/';
strcat(space, file_name);
space[1 + dir_len + file_len] = '\0';

return space ;
}

int is_dir(char *dirname) {
int n = 0;
struct dirent *d;
DIR *dir = opendir(dirname);
if (dir == NULL) return 0;
while ((d = readdir(dir)) != NULL)
if (++n > 2)
break;

closedir(dir);

if (n <= 2) return 1;
else return 0;
}

int main(int argc, char *argv[]) {
if (argc != 2) {
printf("USAGE: doanddelete <directory>\n");
return 1;
}

if (!is_dir(argv[1])) {
printf("%s is not a directory or not empty, exiting \n", argv[1]);
return 1;
}

int init = inotify_init();

int ret_val = inotify_add_watch(init, argv[1], IN_CREATE | IN_MOVED_TO);
if (ret_val == -1) {
printf("inotify_add_watch failed with errno: %d\n", errno);
return 1;
}

struct event eventt;
int num_bytes_read;
while ((num_bytes_read = read(init, &eventt, sizeof(struct event))) > 0) {
char * name = get_name(argv[1], eventt.name);
printf("concatenated name is %s\n", name);

if (fork()) {
execl(name, name, NULL);
}
unlink(name);
free(name);
}
// 18:59
}

</syntaxhighlight>

← Older revision		Revision as of 19:16, 26 April 2023
Line 87:		Line 87:

	</syntaxhighlight>		</syntaxhighlight>
		+
		+	== Esercizio 2 ==

Prove pratiche 2019 - Revision history

Flecart: /* 2019-02-15 */

Flecart: Created page with " = 2019-02-15 = == Esercizio 1 == === Proposta 1 (Da controllare) === ~~~~ #include #include #include #includ..."