diff options
Diffstat (limited to 'libdrm')
| -rw-r--r-- | libdrm/xf86drm.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c index 1a5cee4a..26dd8129 100644 --- a/libdrm/xf86drm.c +++ b/libdrm/xf86drm.c @@ -270,6 +270,36 @@ static int drmMatchBusID(const char *id1, const char *id2) } /** + * Handles error checking for chown call. + * + * \param path to file. + * \param id of the new owner. + * \param id of the new group. + * + * \return zero if success or -1 if failure. + * + * \internal + * Checks for failure. If failure was caused by signal call chown again. + * If any other failure happened then it will output error mesage using + * drmMsg() call. + */ +static int chown_check_return(const char *path, uid_t owner, gid_t group) +{ + int rv; + + do { + rv = chown(path, owner, group); + } while (rv != 0 && errno == EINTR); + + if (rv == 0) + return 0; + + drmMsg("Failed to change owner or group for file %s! %d: %s\n", + path, errno, strerror(errno)); + return -1; +} + +/** * Open the DRM device, creating it if necessary. * * \param dev major and minor numbers of the device. @@ -307,7 +337,7 @@ static int drmOpenDevice(long dev, int minor, int type) if (!isroot) return DRM_ERR_NOT_ROOT; mkdir(DRM_DIR_NAME, DRM_DEV_DIRMODE); - chown(DRM_DIR_NAME, 0, 0); /* root:root */ + chown_check_return(DRM_DIR_NAME, 0, 0); /* root:root */ chmod(DRM_DIR_NAME, DRM_DEV_DIRMODE); } @@ -320,7 +350,7 @@ static int drmOpenDevice(long dev, int minor, int type) } if (drm_server_info) { - chown(buf, user, group); + chown_check_return(buf, user, group); chmod(buf, devmode); } #else @@ -363,7 +393,7 @@ wait_for_udev: remove(buf); mknod(buf, S_IFCHR | devmode, dev); if (drm_server_info) { - chown(buf, user, group); + chown_check_return(buf, user, group); chmod(buf, devmode); } } |