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Commit e2694ab

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Signed-off-by: Seungha Son <seungha.son@samsung.com>
1 parent ddff49d commit e2694ab

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1 file changed

+88
-88
lines changed

1 file changed

+88
-88
lines changed

‎io_multiplexing/poll/poll_inotify.c

Lines changed: 88 additions & 88 deletions
Original file line numberDiff line numberDiff line change
@@ -7,114 +7,114 @@
77
#include <unistd.h>
88

99
static void handle_events(int fd, int *wd, int argc, char* argv[]) {
10-
int i;
11-
ssize_t len;
12-
char *ptr;
13-
char buf[4096] __attribute__ ((aligned(__alignof__(struct inotify_event))));
14-
const struct inotify_event *event;
10+
int i;
11+
ssize_t len;
12+
char *ptr;
13+
char buf[4096] __attribute__ ((aligned(__alignof__(struct inotify_event))));
14+
const struct inotify_event *event;
1515

16-
for (;;) {
17-
len = read(fd, buf, sizeof buf);
18-
if (len == -1 && errno != EAGAIN) {
19-
perror("read");
20-
exit(EXIT_FAILURE);
21-
}
16+
for (;;) {
17+
len = read(fd, buf, sizeof buf);
18+
if (len == -1 && errno != EAGAIN) {
19+
perror("read");
20+
exit(EXIT_FAILURE);
21+
}
2222

23-
if (len <= 0)
24-
break;
23+
if (len <= 0)
24+
break;
2525

26-
for (ptr = buf; ptr < buf + len; ptr += sizeof(struct inotify_event) + event->len) {
27-
event = (const struct inotify_event *) ptr;
26+
for (ptr = buf; ptr < buf + len; ptr += sizeof(struct inotify_event) + event->len) {
27+
event = (const struct inotify_event *) ptr;
2828

2929
for (i = 1; i < argc; ++i) {
30-
if (wd[i] == event->wd) {
31-
printf("%s ", argv[i]);
32-
break;
33-
}
34-
}
35-
36-
if (event->mask & IN_OPEN)
37-
printf("IN_OPEN");
38-
if (event->mask & IN_CLOSE_NOWRITE)
39-
printf("IN_CLOSE_NOWRITE");
40-
if (event->mask & IN_CLOSE_WRITE)
41-
printf("IN_CLOSE_WRITE");
30+
if (wd[i] == event->wd) {
31+
printf("%s ", argv[i]);
32+
break;
33+
}
34+
}
35+
36+
if (event->mask & IN_OPEN)
37+
printf("IN_OPEN");
38+
if (event->mask & IN_CLOSE_NOWRITE)
39+
printf("IN_CLOSE_NOWRITE");
40+
if (event->mask & IN_CLOSE_WRITE)
41+
printf("IN_CLOSE_WRITE");
4242
if (event->mask & IN_MODIFY)
4343
printf("IN_MODIFY");
4444
if (event->mask & IN_CLOSE_WRITE)
4545
printf("IN_CLOSE_WRITE");
4646
if (event->mask & IN_IGNORED)
4747
printf("IN_IGNORED");
4848
printf("\n");
49-
}
50-
}
49+
}
50+
}
5151
}
5252

5353
int main(int argc, char* argv[]) {
54-
char buf[100];
55-
int fd, i, poll_num;
56-
int *wd;
57-
nfds_t nfds;
58-
struct pollfd fds[2];
59-
60-
if (argc < 2) {
61-
printf("Usage: %s PATH [PATH ...]\n", argv[0]);
62-
exit(EXIT_FAILURE);
63-
}
64-
65-
fd = inotify_init1(IN_NONBLOCK);
66-
if (fd == -1) {
67-
perror("inotify_init1");
68-
exit(EXIT_FAILURE);
69-
}
70-
71-
wd = calloc(argc, sizeof(int));
72-
if (wd == NULL) {
73-
perror("calloc");
74-
exit(EXIT_FAILURE);
75-
}
76-
77-
for (i = 1; i < argc; i++) {
78-
wd[i] = inotify_add_watch(fd, argv[i], IN_OPEN | IN_CLOSE | IN_CLOSE_WRITE | IN_MODIFY | IN_IGNORED);
79-
if (wd[i] == -1) {
80-
fprintf(stderr, "Cannot watch '%s'\n", argv[i]);
81-
perror("inotify_add_watch");
82-
exit(EXIT_FAILURE);
83-
}
84-
}
85-
86-
nfds = 2;
87-
88-
fds[0].fd = STDIN_FILENO;
89-
fds[0].events = POLLIN;
90-
91-
fds[1].fd = fd;
92-
fds[1].events = POLLIN;
93-
94-
while (1) {
95-
poll_num = poll(fds, nfds, -1);
96-
if (poll_num == -1) {
97-
if (errno == EINTR)
98-
continue;
99-
perror("poll");
100-
exit(EXIT_FAILURE);
101-
}
102-
103-
if (poll_num > 0) {
104-
if (fds[0].revents & POLLIN) {
54+
char buf[100];
55+
int fd, i, poll_num;
56+
int *wd;
57+
nfds_t nfds;
58+
struct pollfd fds[2];
59+
60+
if (argc < 2) {
61+
printf("Usage: %s PATH [PATH ...]\n", argv[0]);
62+
exit(EXIT_FAILURE);
63+
}
64+
65+
fd = inotify_init1(IN_NONBLOCK);
66+
if (fd == -1) {
67+
perror("inotify_init1");
68+
exit(EXIT_FAILURE);
69+
}
70+
71+
wd = calloc(argc, sizeof(int));
72+
if (wd == NULL) {
73+
perror("calloc");
74+
exit(EXIT_FAILURE);
75+
}
76+
77+
for (i = 1; i < argc; i++) {
78+
wd[i] = inotify_add_watch(fd, argv[i], IN_OPEN | IN_CLOSE | IN_CLOSE_WRITE | IN_MODIFY | IN_IGNORED);
79+
if (wd[i] == -1) {
80+
fprintf(stderr, "Cannot watch '%s'\n", argv[i]);
81+
perror("inotify_add_watch");
82+
exit(EXIT_FAILURE);
83+
}
84+
}
85+
86+
nfds = 2;
87+
88+
fds[0].fd = STDIN_FILENO;
89+
fds[0].events = POLLIN;
90+
91+
fds[1].fd = fd;
92+
fds[1].events = POLLIN;
93+
94+
while (1) {
95+
poll_num = poll(fds, nfds, -1);
96+
if (poll_num == -1) {
97+
if (errno == EINTR)
98+
continue;
99+
perror("poll");
100+
exit(EXIT_FAILURE);
101+
}
102+
103+
if (poll_num > 0) {
104+
if (fds[0].revents & POLLIN) {
105105
if (read(STDIN_FILENO, &buf, 100) > 0) {
106106
printf("%s\n", buf);
107107
memset(buf, 0, 100);
108108
}
109109
}
110-
if (fds[1].revents & POLLIN) {
111-
handle_events(fd, wd, argc, argv);
112-
}
113-
}
114-
}
115-
116-
close(fd);
117-
free(wd);
110+
if (fds[1].revents & POLLIN) {
111+
handle_events(fd, wd, argc, argv);
112+
}
113+
}
114+
}
115+
116+
close(fd);
117+
free(wd);
118118

119119
return 0;
120120
}

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