Merge branch 'busybox' into merge

1 files changed, 50 insertions, 4 deletions

diff --git a/include/libbb.h b/include/libbb.h
index 9da94638b..84811c4f2 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -727,6 +727,7 @@ int xsocket_stream(len_and_sockaddr **lsap) FAST_FUNC;
 /* NB: these set SO_REUSEADDR before bind */
 int create_and_bind_stream_or_die(const char *bindaddr, int port) FAST_FUNC;
 int create_and_bind_dgram_or_die(const char *bindaddr, int port) FAST_FUNC;
+int create_and_bind_to_netlink(int proto, int grp, unsigned rcvbuf) FAST_FUNC;
 /* Create client TCP socket connected to peer:port. Peer cannot be NULL.
  * Peer can be numeric IP ("N.N.N.N"), numeric IPv6 address or hostname,
  * and can have ":PORT" suffix (for IPv6 use "[X:X:...:X]:PORT").
@@ -1176,7 +1177,7 @@ void exec_prog_or_SHELL(char **argv) NORETURN FAST_FUNC;
 ({ \
         pid_t bb__xvfork_pid = vfork(); \
         if (bb__xvfork_pid < 0) \
-                bb_perror_msg_and_die("vfork"); \
+                bb_simple_perror_msg_and_die("vfork"); \
         bb__xvfork_pid; \
 })
 #else
@@ -1366,13 +1367,17 @@ extern void (*die_func)(void);
 void xfunc_die(void) NORETURN FAST_FUNC;
 void bb_show_usage(void) NORETURN FAST_FUNC;
 void bb_error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
+void bb_simple_error_msg(const char *s) FAST_FUNC;
 void bb_error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
+void bb_simple_error_msg_and_die(const char *s) NORETURN FAST_FUNC;
 void bb_perror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
 void bb_simple_perror_msg(const char *s) FAST_FUNC;
 void bb_perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
 void bb_simple_perror_msg_and_die(const char *s) NORETURN FAST_FUNC;
 void bb_herror_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
+void bb_simple_herror_msg(const char *s) FAST_FUNC;
 void bb_herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2))) FAST_FUNC;
+void bb_simple_herror_msg_and_die(const char *s) NORETURN FAST_FUNC;
 void bb_perror_nomsg_and_die(void) NORETURN FAST_FUNC;
 void bb_perror_nomsg(void) FAST_FUNC;
 void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC;
@@ -1381,12 +1386,51 @@ void bb_logenv_override(void) FAST_FUNC;
 
 #if ENABLE_FEATURE_SYSLOG_INFO
 void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC;
+void bb_simple_info_msg(const char *s) FAST_FUNC;
 void bb_vinfo_msg(const char *s, va_list p) FAST_FUNC;
 #else
 #define bb_info_msg bb_error_msg
+#define bb_simple_info_msg bb_simple_error_msg
 #define bb_vinfo_msg(s,p) bb_verror_msg(s,p,NULL)
 #endif
 
+#if ENABLE_WARN_SIMPLE_MSG
+/* If enabled, cause calls to bb_error_msg() et al that only take a single
+ * parameter to generate a warning.
+ */
+static inline void __attribute__ ((deprecated("use bb_simple_error_msg instead")))
+        bb_not_simple_error_msg(const char *s) { bb_simple_error_msg(s); }
+static inline void __attribute__ ((deprecated("use bb_simple_error_msg_and_die instead"))) NORETURN
+        bb_not_simple_error_msg_and_die(const char *s) { bb_simple_error_msg_and_die(s); }
+static inline void __attribute__ ((deprecated("use bb_simple_perror_msg instead")))
+        bb_not_simple_perror_msg(const char *s) { bb_simple_perror_msg(s); }
+static inline void __attribute__ ((deprecated("use bb_simple_perror_msg_and_die instead"))) NORETURN
+        bb_not_simple_perror_msg_and_die(const char *s) { bb_simple_perror_msg_and_die(s); }
+static inline void __attribute__ ((deprecated("use bb_simple_herror_msg instead")))
+        bb_not_simple_herror_msg(const char *s) { bb_simple_herror_msg(s); }
+static inline void __attribute__ ((deprecated("use bb_simple_herror_msg_and_die instead"))) NORETURN
+        bb_not_simple_herror_msg_and_die(const char *s) { bb_simple_herror_msg_and_die(s); }
+static inline void __attribute__ ((deprecated("use bb_simple_info_msg instead")))
+        bb_not_simple_info_msg(const char *s) { bb_simple_info_msg(s); }
+/* Override bb_error_msg() and related functions with macros that will
+ * substitute them for the equivalent bb_not_simple_error_msg() function when
+ * they are used with only a single parameter. Macro approach inspired by
+ * https://gustedt.wordpress.com/2010/06/08/detect-empty-macro-arguments and
+ * https://gustedt.wordpress.com/2010/06/03/default-arguments-for-c99
+ */
+#define _ARG18(_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, ...) _17
+#define BB_MSG_KIND(...)           _ARG18(__VA_ARGS__, , , , , , , , , , , , , , , , , _not_simple)
+#define _BB_MSG(name, kind, ...)   bb##kind##name(__VA_ARGS__)
+#define BB_MSG(name, kind, ...)    _BB_MSG(name, kind, __VA_ARGS__)
+#define bb_error_msg(...)          BB_MSG(_error_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__)
+#define bb_error_msg_and_die(...)  BB_MSG(_error_msg_and_die, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__)
+#define bb_perror_msg(...)         BB_MSG(_perror_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__)
+#define bb_perror_msg_and_die(...) BB_MSG(_perror_msg_and_die, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__)
+#define bb_herror_msg(...)         BB_MSG(_herror_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__)
+#define bb_herror_msg_and_die(...) BB_MSG(_herror_msg_and_die, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__)
+#define bb_info_msg(...)           BB_MSG(_info_msg, BB_MSG_KIND(__VA_ARGS__), __VA_ARGS__)
+#endif
+
 /* We need to export XXX_main from libbusybox
  * only if we build "individual" binaries
  */
@@ -1503,17 +1547,19 @@ extern void bb_warn_ignoring_args(char *arg) FAST_FUNC;
 
 extern int get_linux_version_code(void) FAST_FUNC;
 
-extern char *query_loop(const char *device) FAST_FUNC;
-extern int del_loop(const char *device) FAST_FUNC;
+char *query_loop(const char *device) FAST_FUNC;
+int get_free_loop(void) FAST_FUNC;
+int del_loop(const char *device) FAST_FUNC;
 /*
  * If *devname is not NULL, use that name, otherwise try to find free one,
  * malloc and return it in *devname.
  * return value is the opened fd to the loop device, or < on error
  */
-extern int set_loop(char **devname, const char *file, unsigned long long offset, unsigned flags) FAST_FUNC;
+int set_loop(char **devname, const char *file, unsigned long long offset, unsigned flags) FAST_FUNC;
 /* These constants match linux/loop.h (without BB_ prefix): */
 #define BB_LO_FLAGS_READ_ONLY 1
 #define BB_LO_FLAGS_AUTOCLEAR 4
+#define BB_LO_FLAGS_PARTSCAN  8
 
 /* Returns malloced str */
 char *bb_ask_noecho(int fd, int timeout, const char *prompt) FAST_FUNC;