The check_mesh_iface* functions are not used to modify anything in sysfs. So they are better placed in the common/shared functions file than in sys.c.
Signed-off-by: Sven Eckelmann sven@narfation.org --- v3: - rebased on current master v2: - no change --- functions.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ functions.h | 2 ++ sys.c | 56 -------------------------------------------------------- sys.h | 2 -- 4 files changed, 61 insertions(+), 58 deletions(-)
diff --git a/functions.c b/functions.c index 85482b4..66b2d16 100644 --- a/functions.c +++ b/functions.c @@ -32,6 +32,7 @@ #include <string.h> #include <errno.h> #include <fcntl.h> +#include <dirent.h> #include <sys/time.h> #include <netinet/in.h> #include <stdint.h> @@ -57,6 +58,8 @@ #include "debugfs.h" #include "netlink.h"
+#define PATH_BUFF_LEN 200 + static struct timespec start_time; static char *host_name; char *line_ptr = NULL; @@ -1013,3 +1016,59 @@ err_free_sock:
return err; } + +int check_mesh_iface(char *mesh_iface) +{ + char *base_dev = NULL; + char path_buff[PATH_BUFF_LEN]; + int ret = -1, vid; + DIR *dir; + + /* use the parent interface if this is a VLAN */ + vid = vlan_get_link(mesh_iface, &base_dev); + if (vid >= 0) + snprintf(path_buff, PATH_BUFF_LEN, SYS_VLAN_PATH, base_dev, vid); + else + snprintf(path_buff, PATH_BUFF_LEN, SYS_BATIF_PATH_FMT, mesh_iface); + + /* try to open the mesh sys directory */ + dir = opendir(path_buff); + if (!dir) + goto out; + + closedir(dir); + + ret = 0; +out: + if (base_dev) + free(base_dev); + + return ret; +} + +int check_mesh_iface_ownership(char *mesh_iface, char *hard_iface) +{ + char path_buff[PATH_BUFF_LEN]; + int res; + + /* check if this device actually belongs to the mesh interface */ + snprintf(path_buff, sizeof(path_buff), SYS_MESH_IFACE_FMT, hard_iface); + res = read_file("", path_buff, USE_READ_BUFF | SILENCE_ERRORS, 0, 0, 0); + if (res != EXIT_SUCCESS) { + fprintf(stderr, "Error - the directory '%s' could not be read: %s\n", + path_buff, strerror(errno)); + fprintf(stderr, "Is the batman-adv module loaded and sysfs mounted ?\n"); + return EXIT_FAILURE; + } + + if (line_ptr[strlen(line_ptr) - 1] == '\n') + line_ptr[strlen(line_ptr) - 1] = '\0'; + + if (strcmp(line_ptr, mesh_iface) != 0) { + fprintf(stderr, "Error - interface %s is part of batman network %s, not %s\n", + hard_iface, line_ptr, mesh_iface); + return EXIT_FAILURE; + } + + return EXIT_SUCCESS; +} diff --git a/functions.h b/functions.h index 4c350f8..e413d6b 100644 --- a/functions.h +++ b/functions.h @@ -50,6 +50,8 @@ struct ether_addr *resolve_mac(const char *asc); int vlan_get_link(const char *ifname, char **parent);\ int query_rtnl_link(int ifindex, nl_recvmsg_msg_cb_t func, void *arg); int netlink_simple_request(struct nl_msg *msg); +int check_mesh_iface(char *mesh_iface); +int check_mesh_iface_ownership(char *mesh_iface, char *hard_iface);
int print_routing_algos(void); extern char *line_ptr; diff --git a/sys.c b/sys.c index 59cbdae..b524340 100644 --- a/sys.c +++ b/sys.c @@ -511,59 +511,3 @@ free_buff: out: return res; } - -int check_mesh_iface(char *mesh_iface) -{ - char *base_dev = NULL; - char path_buff[PATH_BUFF_LEN]; - int ret = -1, vid; - DIR *dir; - - /* use the parent interface if this is a VLAN */ - vid = vlan_get_link(mesh_iface, &base_dev); - if (vid >= 0) - snprintf(path_buff, PATH_BUFF_LEN, SYS_VLAN_PATH, base_dev, vid); - else - snprintf(path_buff, PATH_BUFF_LEN, SYS_BATIF_PATH_FMT, mesh_iface); - - /* try to open the mesh sys directory */ - dir = opendir(path_buff); - if (!dir) - goto out; - - closedir(dir); - - ret = 0; -out: - if (base_dev) - free(base_dev); - - return ret; -} - -int check_mesh_iface_ownership(char *mesh_iface, char *hard_iface) -{ - char path_buff[PATH_BUFF_LEN]; - int res; - - /* check if this device actually belongs to the mesh interface */ - snprintf(path_buff, sizeof(path_buff), SYS_MESH_IFACE_FMT, hard_iface); - res = read_file("", path_buff, USE_READ_BUFF | SILENCE_ERRORS, 0, 0, 0); - if (res != EXIT_SUCCESS) { - fprintf(stderr, "Error - the directory '%s' could not be read: %s\n", - path_buff, strerror(errno)); - fprintf(stderr, "Is the batman-adv module loaded and sysfs mounted ?\n"); - return EXIT_FAILURE; - } - - if (line_ptr[strlen(line_ptr) - 1] == '\n') - line_ptr[strlen(line_ptr) - 1] = '\0'; - - if (strcmp(line_ptr, mesh_iface) != 0) { - fprintf(stderr, "Error - interface %s is part of batman network %s, not %s\n", - hard_iface, line_ptr, mesh_iface); - return EXIT_FAILURE; - } - - return EXIT_SUCCESS; -} diff --git a/sys.h b/sys.h index be9480e..1365e76 100644 --- a/sys.h +++ b/sys.h @@ -74,7 +74,5 @@ int handle_loglevel(char *mesh_iface, int argc, char **argv); int handle_sys_setting(char *mesh_iface, int setting, int argc, char **argv); int handle_gw_setting(char *mesh_iface, int argc, char **argv); int handle_ra_setting(int argc, char **argv); -int check_mesh_iface(char *mesh_iface); -int check_mesh_iface_ownership(char *mesh_iface, char *hard_iface);
#endif