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backends: Set error when opening /sys file fails

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The caller in clutter really expects an error if fd==-1, so make
sure we set one here. Otherwise we get a nice crash in addition to
the failure to open the /sys file. Also, retry on EINTR.

https://bugzilla.gnome.org/show_bug.cgi?id=784881
This commit is contained in:
Carlos Garnacho 2017-07-12 22:36:42 +02:00
parent ca600973ba
commit a6ec2b1d42
1 changed files with 16 additions and 3 deletions
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19
src/backends/native/meta-launcher.c
View File

@ -188,9 +188,22 @@ on_evdev_device_open (const char *path,
/* Allow readonly access to sysfs */
if (g_str_has_prefix (path, "/sys/"))
{
fd = open (path, flags);
if (fd >= 0)
g_hash_table_add (self->sysfs_fds, GINT_TO_POINTER (fd));
do
{
fd = open (path, flags);
}
while (fd < 0 && errno == EINTR);
if (fd < 0)
{
g_set_error (error,
G_FILE_ERROR,
g_file_error_from_errno (errno),
"Could not open /sys file: %s: %m", path);
return -1;
}
g_hash_table_add (self->sysfs_fds, GINT_TO_POINTER (fd));
return fd;
}