From: Manuel Bouyer <bouyer@netbsd.org>
To: xen-devel@lists.xenproject.org
Cc: Manuel Bouyer <bouyer@netbsd.org>,
Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>
Subject: [PATCH v2] xenpmd.c: use dynamic allocation
Date: Tue, 26 Jan 2021 23:48:00 +0100 [thread overview]
Message-ID: <20210126224800.1246-14-bouyer@netbsd.org> (raw)
In-Reply-To: <20210126224800.1246-1-bouyer@netbsd.org>
On NetBSD, d_name is larger than 256, so file_name[284] may not be large
enough (and gcc emits a format-truncation error).
Use asprintf() instead of snprintf() on a static on-stack buffer.
Signed-off-by: Manuel Bouyer <bouyer@netbsd.org>
---
tools/xenpmd/xenpmd.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/xenpmd/xenpmd.c b/tools/xenpmd/xenpmd.c
index 12b82cf43e..e432aad856 100644
--- a/tools/xenpmd/xenpmd.c
+++ b/tools/xenpmd/xenpmd.c
@@ -101,7 +101,7 @@ FILE *get_next_battery_file(DIR *battery_dir,
{
FILE *file = 0;
struct dirent *dir_entries;
- char file_name[284];
+ char *file_name;
int ret;
do
@@ -112,16 +112,16 @@ FILE *get_next_battery_file(DIR *battery_dir,
if ( strlen(dir_entries->d_name) < 4 )
continue;
if ( battery_info_type == BIF )
- ret = snprintf(file_name, sizeof(file_name), BATTERY_INFO_FILE_PATH,
+ ret = asprintf(&file_name, BATTERY_INFO_FILE_PATH,
dir_entries->d_name);
else
- ret = snprintf(file_name, sizeof(file_name), BATTERY_STATE_FILE_PATH,
+ ret = asprintf(&file_name, BATTERY_STATE_FILE_PATH,
dir_entries->d_name);
/* This should not happen but is needed to pass gcc checks */
if (ret < 0)
continue;
- file_name[sizeof(file_name) - 1] = '\0';
file = fopen(file_name, "r");
+ free(file_name);
} while ( !file );
return file;
--
2.29.2
next prev parent reply other threads:[~2021-01-26 22:49 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-26 22:47 [PATCH v2] Fix error: array subscript has type 'char' Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] NetBSD hotplug: Introduce locking functions Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] NetBSD hotplug: fix block unconfigure on destroy Manuel Bouyer
2021-01-28 11:45 ` Roger Pau Monné
2021-01-29 11:00 ` Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] NetBSD: use system-provided headers Manuel Bouyer
2021-01-28 11:21 ` Roger Pau Monné
2021-01-29 10:57 ` Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/call: fix build on NetBSD Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/foreignmemory: Implement " Manuel Bouyer
2021-01-27 20:15 ` Andrew Cooper
2021-01-28 10:48 ` Roger Pau Monné
2021-01-28 10:52 ` Andrew Cooper
2021-01-28 11:42 ` Andrew Cooper
2021-01-29 10:51 ` Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/gnttab: implement " Manuel Bouyer
2021-01-28 11:14 ` Roger Pau Monné
2021-01-26 22:47 ` [PATCH v2] libs/light: Switch NetBSD to QEMU_XEN Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/light: fix tv_sec printf format Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/light: fix uuid on NetBSD Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/light: make it build without setresuid() Manuel Bouyer
2021-01-28 11:06 ` Ian Jackson
2021-01-29 22:51 ` Andrew Cooper
2021-01-29 23:01 ` Manuel Bouyer
2021-01-29 23:05 ` Andrew Cooper
2021-01-29 23:16 ` Manuel Bouyer
2021-01-30 18:28 ` Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/light: pass some infos to qemu Manuel Bouyer
2021-01-28 11:08 ` Roger Pau Monné
2021-01-29 10:46 ` Manuel Bouyer
2021-01-29 14:52 ` Roger Pau Monné
2021-01-30 23:07 ` Manuel Bouyer
2021-01-30 11:50 ` Manuel Bouyer
2021-02-01 8:06 ` Roger Pau Monné
2021-02-01 9:39 ` Manuel Bouyer
2021-02-01 10:54 ` Roger Pau Monné
2021-02-01 11:21 ` Manuel Bouyer
2021-01-26 22:47 ` [PATCH v2] libs/store: make build without PTHREAD_STACK_MIN Manuel Bouyer
2021-01-28 10:57 ` Roger Pau Monné
2021-01-28 11:08 ` Andrew Cooper
2021-01-29 10:43 ` Manuel Bouyer
2021-01-26 22:48 ` Manuel Bouyer [this message]
2021-01-28 10:34 ` [PATCH v2] xenpmd.c: use dynamic allocation Roger Pau Monné
2021-01-27 19:30 ` [PATCH v2] Fix error: array subscript has type 'char' Andrew Cooper
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