License header fixes

[lttng-tools.git] / src / common / compat / compat-epoll.c

diff --git a/src/common/compat/compat-epoll.c b/src/common/compat/compat-epoll.c
index 460bc3b373b4ffb1c7d4f00f381ca49cac1c6890..e58497232a130c002940cd1ffeb5b879129d47b7 100644 (file)
--- a/src/common/compat/compat-epoll.c
+++ b/src/common/compat/compat-epoll.c
@@ -1,20 +1,21 @@
 /*
  * Copyright (C)  2011 - David Goulet <david.goulet@polymtl.ca>
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; only version 2 of the License.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 only,
+ * as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  * more details.
  *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA  02111-1307, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
+#define _GNU_SOURCE
 #include <fcntl.h>
 #include <limits.h>
 #include <stdlib.h>
@@ -23,7 +24,7 @@
 #include <unistd.h>
 #include <config.h>
 
-#include <common/lttngerr.h>
+#include <common/error.h>
 #include <common/defaults.h>
 
 #include "poll.h"
@@ -49,7 +50,7 @@ int compat_epoll_create(struct lttng_poll_event *events, int size, int flags)
        ret = epoll_create1(flags);
        if (ret < 0) {
                /* At this point, every error is fatal */
-               perror("epoll_create1");
+               PERROR("epoll_create1");
                goto error;
        }
 
@@ -58,7 +59,7 @@ int compat_epoll_create(struct lttng_poll_event *events, int size, int flags)
        /* This *must* be freed by using lttng_poll_free() */
        events->events = zmalloc(size * sizeof(struct epoll_event));
        if (events->events == NULL) {
-               perror("zmalloc epoll set");
+               PERROR("zmalloc epoll set");
                goto error_close;
        }
 
@@ -68,7 +69,10 @@ int compat_epoll_create(struct lttng_poll_event *events, int size, int flags)
        return 0;
 
 error_close:
-       close(events->epfd);
+       ret = close(events->epfd);
+       if (ret) {
+               PERROR("close");
+       }
 error:
        return -1;
 }
@@ -93,13 +97,15 @@ int compat_epoll_add(struct lttng_poll_event *events, int fd, uint32_t req_event
        if (ret < 0) {
                switch (errno) {
                case EEXIST:
+                       /* If exist, it's OK. */
+                       goto end;
                case ENOSPC:
                case EPERM:
-                       /* Print perror and goto end not failing. Show must go on. */
-                       perror("epoll_ctl ADD");
+                       /* Print PERROR and goto end not failing. Show must go on. */
+                       PERROR("epoll_ctl ADD");
                        goto end;
                default:
-                       perror("epoll_ctl ADD fatal");
+                       PERROR("epoll_ctl ADD fatal");
                        goto error;
                }
        }
@@ -110,7 +116,7 @@ int compat_epoll_add(struct lttng_poll_event *events, int fd, uint32_t req_event
                new_size = 2 * events->events_size;
                ptr = realloc(events->events, new_size * sizeof(struct epoll_event));
                if (ptr == NULL) {
-                       perror("realloc epoll add");
+                       PERROR("realloc epoll add");
                        goto error;
                }
                events->events = ptr;
@@ -140,14 +146,14 @@ int compat_epoll_del(struct lttng_poll_event *events, int fd)
                switch (errno) {
                case ENOENT:
                case EPERM:
-                       /* Print perror and goto end not failing. Show must go on. */
-                       perror("epoll_ctl DEL");
+                       /* Print PERROR and goto end not failing. Show must go on. */
+                       PERROR("epoll_ctl DEL");
                        goto end;
                default:
-                       perror("epoll_ctl DEL fatal");
+                       PERROR("epoll_ctl DEL fatal");
                        goto error;
                }
-               perror("epoll_ctl del");
+               PERROR("epoll_ctl del");
                goto error;
        }
 
@@ -178,7 +184,7 @@ int compat_epoll_wait(struct lttng_poll_event *events, int timeout)
        } while (ret == -1 && errno == EINTR);
        if (ret < 0) {
                /* At this point, every error is fatal */
-               perror("epoll_wait");
+               PERROR("epoll_wait");
                goto error;
        }
 
@@ -205,7 +211,7 @@ void compat_epoll_set_max_size(void)
 
        ret = read(fd, buf, sizeof(buf));
        if (ret < 0) {
-               perror("read set max size");
+               PERROR("read set max size");
                goto error;
        }
 
@@ -218,5 +224,8 @@ void compat_epoll_set_max_size(void)
        DBG("epoll set max size is %d", poll_max_size);
 
 error:
-       close(fd);
+       ret = close(fd);
+       if (ret) {
+               PERROR("close");
+       }
 }