#ifndef HAVE_XTABS
# define XTABS TAB3
#endif
+/*
+ * Use '%m' to append error string on platforms that support it,
+ * '%s' and strerror() on those that don't.
+ */
+#ifdef HAVE_PRINTF_PERCENTM
+# define STRERROR_FMT "%m"
+# define STRERROR_ERRNO /*nothing*/
+#else
+# define STRERROR_FMT "%s"
+# define STRERROR_ERRNO ,strerror(errno)
+#endif
/* Some libc's forget to declare these, do it ourself */
extern char **environ;
-#if defined(__GLIBC__) && __GLIBC__ < 2
-int vdprintf(int d, const char *format, va_list ap);
-#endif
/* klogctl is in libc's klog.h, but we cheat and not #include that */
int klogctl(int type, char *b, int len);
#ifndef PATH_MAX
uint64_t bb_bswap_64(uint64_t x) FAST_FUNC;
#endif
+unsigned long FAST_FUNC isqrt(unsigned long long N);
+
unsigned long long monotonic_ns(void) FAST_FUNC;
unsigned long long monotonic_us(void) FAST_FUNC;
unsigned long long monotonic_ms(void) FAST_FUNC;
unsigned monotonic_sec(void) FAST_FUNC;
extern void chomp(char *s) FAST_FUNC;
-extern void trim(char *s) FAST_FUNC;
+extern char *trim(char *s) FAST_FUNC;
extern char *skip_whitespace(const char *) FAST_FUNC;
extern char *skip_non_whitespace(const char *) FAST_FUNC;
extern char *skip_dev_pfx(const char *tty_name) FAST_FUNC;
extern char *strrstr(const char *haystack, const char *needle) FAST_FUNC;
+/* dmalloc will redefine these to it's own implementation. It is safe
+ * to have the prototypes here unconditionally. */
+void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC;
+void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
+void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
+void *xrealloc(void *old, size_t size) FAST_FUNC;
+/* After v = xrealloc_vector(v, SHIFT, idx) it's ok to use
+ * at least v[idx] and v[idx+1], for all idx values.
+ * SHIFT specifies how many new elements are added (1:2, 2:4, ..., 8:256...)
+ * when all elements are used up. New elements are zeroed out.
+ * xrealloc_vector(v, SHIFT, idx) *MUST* be called with consecutive IDXs -
+ * skipping an index is a bad bug - it may miss a realloc!
+ */
+#define xrealloc_vector(vector, shift, idx) \
+ xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx))
+void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC;
+char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC;
+char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC;
+void *xmemdup(const void *s, int n) FAST_FUNC RETURNS_MALLOC;
+
+
//TODO: supply a pointer to char[11] buffer (avoid statics)?
extern const char *bb_mode_string(mode_t mode) FAST_FUNC;
extern int is_directory(const char *name, int followLinks) FAST_FUNC;
// + inet_common.c has additional IPv4-only stuff
+#define TLS_MAX_MAC_SIZE 32
+#define TLS_MAX_KEY_SIZE 32
+struct tls_handshake_data; /* opaque */
+typedef struct tls_state {
+ int ofd;
+ int ifd;
+
+ unsigned min_encrypted_len_on_read;
+ uint16_t cipher_id;
+ uint8_t encrypt_on_write;
+ unsigned MAC_size;
+ unsigned key_size;
+
+ uint8_t *outbuf;
+ int outbuf_size;
+
+ int inbuf_size;
+ int ofs_to_buffered;
+ int buffered_size;
+ uint8_t *inbuf;
+
+ struct tls_handshake_data *hsd;
+
+ // RFC 5246
+ // sequence number
+ // Each connection state contains a sequence number, which is
+ // maintained separately for read and write states. The sequence
+ // number MUST be set to zero whenever a connection state is made the
+ // active state. Sequence numbers are of type uint64 and may not
+ // exceed 2^64-1.
+ /*uint64_t read_seq64_be;*/
+ uint64_t write_seq64_be;
+
+ uint8_t *client_write_key;
+ uint8_t *server_write_key;
+ uint8_t client_write_MAC_key[TLS_MAX_MAC_SIZE];
+ uint8_t server_write_MAC_k__[TLS_MAX_MAC_SIZE];
+ uint8_t client_write_k__[TLS_MAX_KEY_SIZE];
+ uint8_t server_write_k__[TLS_MAX_KEY_SIZE];
+} tls_state_t;
+
+static inline tls_state_t *new_tls_state(void)
+{
+ tls_state_t *tls = xzalloc(sizeof(*tls));
+ return tls;
+}
+void tls_handshake(tls_state_t *tls, const char *sni) FAST_FUNC;
+void tls_run_copy_loop(tls_state_t *tls) FAST_FUNC;
+
+
void socket_want_pktinfo(int fd) FAST_FUNC;
ssize_t send_to_from(int fd, void *buf, size_t len, int flags,
const struct sockaddr *to,
uint16_t inet_cksum(uint16_t *addr, int len) FAST_FUNC;
-char *xstrdup(const char *s) FAST_FUNC RETURNS_MALLOC;
-char *xstrndup(const char *s, int n) FAST_FUNC RETURNS_MALLOC;
-void *xmemdup(const void *s, int n) FAST_FUNC RETURNS_MALLOC;
+/* 0 if argv[0] is NULL: */
+unsigned string_array_len(char **argv) FAST_FUNC;
void overlapping_strcpy(char *dst, const char *src) FAST_FUNC;
char *safe_strncpy(char *dst, const char *src, size_t size) FAST_FUNC;
char *strncpy_IFNAMSIZ(char *dst, const char *src) FAST_FUNC;
};
void visible(unsigned ch, char *buf, int flags) FAST_FUNC;
-/* dmalloc will redefine these to it's own implementation. It is safe
- * to have the prototypes here unconditionally. */
-void *malloc_or_warn(size_t size) FAST_FUNC RETURNS_MALLOC;
-void *xmalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
-void *xzalloc(size_t size) FAST_FUNC RETURNS_MALLOC;
-void *xrealloc(void *old, size_t size) FAST_FUNC;
-/* After v = xrealloc_vector(v, SHIFT, idx) it's ok to use
- * at least v[idx] and v[idx+1], for all idx values.
- * SHIFT specifies how many new elements are added (1:2, 2:4, ..., 8:256...)
- * when all elements are used up. New elements are zeroed out.
- * xrealloc_vector(v, SHIFT, idx) *MUST* be called with consecutive IDXs -
- * skipping an index is a bad bug - it may miss a realloc!
- */
-#define xrealloc_vector(vector, shift, idx) \
- xrealloc_vector_helper((vector), (sizeof((vector)[0]) << 8) + (shift), (idx))
-void* xrealloc_vector_helper(void *vector, unsigned sizeof_and_shift, int idx) FAST_FUNC;
-
-
extern ssize_t safe_read(int fd, void *buf, size_t count) FAST_FUNC;
extern ssize_t nonblock_immune_read(int fd, void *buf, size_t count) FAST_FUNC;
// NB: will return short read on error, not -1,
#if SEAMLESS_COMPRESSION
/* Autodetects gzip/bzip2 formats. fd may be in the middle of the file! */
-extern int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC;
+int setup_unzip_on_fd(int fd, int fail_if_not_compressed) FAST_FUNC;
/* Autodetects .gz etc */
extern int open_zipped(const char *fname, int fail_if_not_compressed) FAST_FUNC;
extern void *xmalloc_open_zipped_read_close(const char *fname, size_t *maxsz_p) FAST_FUNC RETURNS_MALLOC;
# define open_zipped(fname, fail_if_not_compressed) open((fname), O_RDONLY);
# define xmalloc_open_zipped_read_close(fname, maxsz_p) xmalloc_open_read_close((fname), (maxsz_p))
#endif
+/* lzma has no signature, need a little helper. NB: exist only for ENABLE_FEATURE_SEAMLESS_LZMA=y */
+void setup_lzma_on_fd(int fd) FAST_FUNC;
extern ssize_t safe_write(int fd, const void *buf, size_t count) FAST_FUNC;
// NB: will return short write on error, not -1,
#define km_suffixes (bkm_suffixes + 1)
extern const struct suffix_mult cwbkMG_suffixes[];
#define kMG_suffixes (cwbkMG_suffixes + 3)
+extern const struct suffix_mult kmg_i_suffixes[];
#include "xatonum.h"
/* Specialized: */
#else
#define die_if_bad_username(name) ((void)(name))
#endif
+/*
+ * Returns (-1) terminated malloced result of getgroups().
+ * Reallocs group_array (useful for repeated calls).
+ * ngroups is an initial size of array. It is rounded up to 32 for realloc.
+ * ngroups is updated on return.
+ * ngroups can be NULL: bb_getgroups(NULL, NULL) is valid usage.
+ * Dies on errors (on Linux, only xrealloc can cause this, not internal getgroups call).
+ */
+gid_t *bb_getgroups(int *ngroups, gid_t *group_array) FAST_FUNC;
#if ENABLE_FEATURE_UTMP
void FAST_FUNC write_new_utmp(pid_t pid, int new_type, const char *tty_name, const char *username, const char *hostname);
*/
int wait4pid(pid_t pid) FAST_FUNC;
int wait_for_exitstatus(pid_t pid) FAST_FUNC;
+/************************************************************************/
+/* spawn_and_wait/run_nofork_applet/run_applet_no_and_exit need to work */
+/* carefully together to reinit some global state while not disturbing */
+/* other. Be careful if you change them. Consult docs/nofork_noexec.txt */
+/************************************************************************/
/* Same as wait4pid(spawn(argv)), but with NOFORK/NOEXEC if configured: */
int spawn_and_wait(char **argv) FAST_FUNC;
/* Does NOT check that applet is NOFORK, just blindly runs it */
int run_nofork_applet(int applet_no, char **argv) FAST_FUNC;
+void run_noexec_applet_and_exit(int a, const char *name, char **argv) NORETURN FAST_FUNC;
+#ifndef BUILD_INDIVIDUAL
+int find_applet_by_name(const char *name) FAST_FUNC;
+void run_applet_no_and_exit(int a, const char *name, char **argv) NORETURN FAST_FUNC;
+#endif
+#if defined(__linux__)
+void set_task_comm(const char *comm) FAST_FUNC;
+#else
+# define set_task_comm(name) ((void)0)
+#endif
/* Helpers for daemonization.
*
#endif
void bb_daemonize_or_rexec(int flags, char **argv) FAST_FUNC;
void bb_sanitize_stdio(void) FAST_FUNC;
+#define bb_daemon_helper(arg) bb_daemonize_or_rexec((arg) | DAEMON_ONLY_SANITIZE, NULL)
/* Clear dangerous stuff, set PATH. Return 1 if was run by different user. */
int sanitize_env_if_suid(void) FAST_FUNC;
+/* For top, ps. Some argv[i] are replaced by malloced "-opt" strings */
+void make_all_argv_opts(char **argv) FAST_FUNC;
char* single_argv(char **argv) FAST_FUNC;
-extern const char *const bb_argv_dash[]; /* "-", NULL */
-extern const char *opt_complementary;
-#if ENABLE_LONG_OPTS || ENABLE_FEATURE_GETOPT_LONG
-#define No_argument "\0"
-#define Required_argument "\001"
-#define Optional_argument "\002"
-extern const char *applet_long_options;
-#endif
+extern const char *const bb_argv_dash[]; /* { "-", NULL } */
extern uint32_t option_mask32;
-extern uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC;
+uint32_t getopt32(char **argv, const char *applet_opts, ...) FAST_FUNC;
+# define No_argument "\0"
+# define Required_argument "\001"
+# define Optional_argument "\002"
+#if ENABLE_LONG_OPTS
+uint32_t getopt32long(char **argv, const char *optstring, const char *longopts, ...) FAST_FUNC;
+#else
+#define getopt32long(argv,optstring,longopts,...) \
+ getopt32(argv,optstring,##__VA_ARGS__)
+#endif
+/* BSD-derived getopt() functions require that optind be set to 1 in
+ * order to reset getopt() state. This used to be generally accepted
+ * way of resetting getopt(). However, glibc's getopt()
+ * has additional getopt() state beyond optind (specifically, glibc
+ * extensions such as '+' and '-' at the start of the string), and requires
+ * that optind be set to zero to reset its state. BSD-derived versions
+ * of getopt() misbehaved if optind is set to 0 in order to reset getopt(),
+ * and glibc's getopt() used to coredump if optind is set 1 in order
+ * to reset getopt().
+ * Then BSD introduced additional variable "optreset" which should be
+ * set to 1 in order to reset getopt(). Sigh. Standards, anyone?
+ *
+ * By ~2008, OpenBSD 3.4 was changed to survive glibc-like optind = 0
+ * (to interpret it as if optreset was set).
+ */
+#if 1 /*def __GLIBC__*/
+#define GETOPT_RESET() (optind = 0)
+#else /* BSD style */
+#define GETOPT_RESET() (optind = 1)
+#endif
/* Having next pointer as a first member allows easy creation
/* Applets which are useful from another applets */
-int bb_cat(char** argv);
+int bb_cat(char** argv) FAST_FUNC;
/* If shell needs them, they exist even if not enabled as applets */
int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE);
int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE);
void bb_displayroutes(int noresolve, int netstatfmt) FAST_FUNC;
#endif
+struct number_state {
+ unsigned width;
+ unsigned start;
+ unsigned inc;
+ const char *sep;
+ const char *empty_str;
+ smallint all, nonempty;
+};
+void print_numbered_lines(struct number_state *ns, const char *filename) FAST_FUNC;
+
/* Networking */
/* This structure defines protocol families and their handlers. */
const struct hwtype *get_hwntype(int type) FAST_FUNC;
-#ifndef BUILD_INDIVIDUAL
-extern int find_applet_by_name(const char *name) FAST_FUNC;
-extern void run_applet_no_and_exit(int a, char **argv) NORETURN FAST_FUNC;
-#endif
-
+extern int fstype_matches(const char *fstype, const char *comma_list) FAST_FUNC;
#ifdef HAVE_MNTENT_H
-extern int match_fstype(const struct mntent *mt, const char *fstypes) FAST_FUNC;
extern struct mntent *find_mount_point(const char *name, int subdir_too) FAST_FUNC;
#endif
extern void erase_mtab(const char * name) FAST_FUNC;
extern char *query_loop(const char *device) FAST_FUNC;
extern int del_loop(const char *device) FAST_FUNC;
-/* If *devname is not NULL, use that name, otherwise try to find free one,
+/*
+ * If *devname is not NULL, use that name, otherwise try to find free one,
* malloc and return it in *devname.
- * return value: 1: read-only loopdev was setup, 0: rw, < 0: error */
-extern int set_loop(char **devname, const char *file, unsigned long long offset, int ro) FAST_FUNC;
+ * 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;
+/* These constants match linux/loop.h (without BB_ prefix): */
+#define BB_LO_FLAGS_READ_ONLY 1
+#define BB_LO_FLAGS_AUTOCLEAR 4
/* Like bb_ask below, but asks on stdin with no timeout. */
char *bb_ask_stdin(const char * prompt) FAST_FUNC;
// keep a copy of current line
PARSE_KEEP_COPY = 0x00200000 * ENABLE_FEATURE_CROND_D,
PARSE_EOL_COMMENTS = 0x00400000, // comments are recognized even if they aren't the first char
+ PARSE_ALT_COMMENTS = 0x00800000, // delim[0] and delim[1] are two different allowed comment chars
+ // (so far, delim[0] will only work as comment char for full-line comment)
+ // (IOW: it works as if PARSE_EOL_COMMENTS is not set. sysctl applet is okay with this)
+ PARSE_WS_COMMENTS = 0x01000000, // comments are recognized even if there is whitespace before
+ // ("line start><space><tab><space>#comment" is also comment, not only "line start>#comment")
// NORMAL is:
// * remove leading and trailing delimiters and collapse
// multiple delimiters into one
*/
const char *get_shell_name(void) FAST_FUNC;
+unsigned cap_name_to_number(const char *cap) FAST_FUNC;
+void printf_cap(const char *pfx, unsigned cap_no) FAST_FUNC;
+void drop_capability(int cap_ordinal) FAST_FUNC;
+/* Structures inside "struct caps" are Linux-specific and libcap-specific: */
+#define DEFINE_STRUCT_CAPS \
+struct caps { \
+ struct __user_cap_header_struct header; \
+ unsigned u32s; \
+ struct __user_cap_data_struct data[2]; \
+}
+void getcaps(void *caps) FAST_FUNC;
+
+unsigned cap_name_to_number(const char *name) FAST_FUNC;
+void printf_cap(const char *pfx, unsigned cap_no) FAST_FUNC;
+
#if ENABLE_SELINUX
extern void renew_current_security_context(void) FAST_FUNC;
extern void set_current_security_context(security_context_t sid) FAST_FUNC;
* HOME=pw->pw_dir
* SHELL=shell
* else does nothing
+ *
+ * NB: CHANGEENV and CLEARENV use setenv() - this leaks memory!
+ * If setup_environment() is used is vforked child, this leaks memory _in parent too_!
*/
#define SETUP_ENV_CHANGEENV (1 << 0)
#define SETUP_ENV_CLEARENV (1 << 1)
#define SETUP_ENV_NO_CHDIR (1 << 4)
void setup_environment(const char *shell, int flags, const struct passwd *pw) FAST_FUNC;
void nuke_str(char *str) FAST_FUNC;
+#if ENABLE_FEATURE_SECURETTY && !ENABLE_PAM
+int is_tty_secure(const char *short_tty) FAST_FUNC;
+#else
+static ALWAYS_INLINE int is_tty_secure(const char *short_tty UNUSED_PARAM) { return 1; }
+#endif
+#define CHECKPASS_PW_HAS_EMPTY_PASSWORD 2
int check_password(const struct passwd *pw, const char *plaintext) FAST_FUNC;
int ask_and_check_password_extended(const struct passwd *pw, int timeout, const char *prompt) FAST_FUNC;
int ask_and_check_password(const struct passwd *pw) FAST_FUNC;
int get_terminal_width(int fd) FAST_FUNC;
int tcsetattr_stdin_TCSANOW(const struct termios *tp) FAST_FUNC;
+#define TERMIOS_CLEAR_ISIG (1 << 0)
+#define TERMIOS_RAW_CRNL (1 << 1)
+#define TERMIOS_RAW_INPUT (1 << 2)
+int get_termios_and_make_raw(int fd, struct termios *newterm, struct termios *oldterm, int flags) FAST_FUNC;
+int set_termios_to_raw(int fd, struct termios *oldterm, int flags) FAST_FUNC;
/* NB: "unsigned request" is crucial! "int request" will break some arches! */
int ioctl_or_perror(int fd, unsigned request, void *argp, const char *fmt,...) __attribute__ ((format (printf, 4, 5))) FAST_FUNC;
* buffer[0] is used as a counter of buffered chars and must be 0
* on first call.
* timeout:
- * -2: do not poll for input;
- * -1: poll(-1) (i.e. block);
- * >=0: poll for TIMEOUT milliseconds, return -1/EAGAIN on timeout
+ * -2: do not poll(-1) for input - read() it, return on EAGAIN at once
+ * -1: poll(-1) (i.e. block even on NONBLOCKed fd)
+ * >=0: poll() for TIMEOUT milliseconds, return -1/EAGAIN on timeout
*/
int64_t read_key(int fd, char *buffer, int timeout) FAST_FUNC;
void read_key_ungets(char *buffer, const char *str, unsigned len) FAST_FUNC;
# endif
typedef struct line_input_t {
int flags;
+ int timeout;
const char *path_lookup;
# if MAX_HISTORY
int cnt_history;
* 0 on ctrl-C (the line entered is still returned in 'command'),
* >0 length of input string, including terminating '\n'
*/
-int read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize, int timeout) FAST_FUNC;
+int read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize) FAST_FUNC;
void show_history(const line_input_t *st) FAST_FUNC;
# if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT
void save_history(line_input_t *st);
#else
#define MAX_HISTORY 0
int read_line_input(const char* prompt, char* command, int maxsize) FAST_FUNC;
-#define read_line_input(state, prompt, command, maxsize, timeout) \
+#define read_line_input(state, prompt, command, maxsize) \
read_line_input(prompt, command, maxsize)
#endif
} sha3_ctx_t;
void md5_begin(md5_ctx_t *ctx) FAST_FUNC;
void md5_hash(md5_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
-void md5_end(md5_ctx_t *ctx, void *resbuf) FAST_FUNC;
+unsigned md5_end(md5_ctx_t *ctx, void *resbuf) FAST_FUNC;
void sha1_begin(sha1_ctx_t *ctx) FAST_FUNC;
#define sha1_hash md5_hash
-void sha1_end(sha1_ctx_t *ctx, void *resbuf) FAST_FUNC;
+unsigned sha1_end(sha1_ctx_t *ctx, void *resbuf) FAST_FUNC;
void sha256_begin(sha256_ctx_t *ctx) FAST_FUNC;
#define sha256_hash md5_hash
#define sha256_end sha1_end
void sha512_begin(sha512_ctx_t *ctx) FAST_FUNC;
void sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
-void sha512_end(sha512_ctx_t *ctx, void *resbuf) FAST_FUNC;
+unsigned sha512_end(sha512_ctx_t *ctx, void *resbuf) FAST_FUNC;
void sha3_begin(sha3_ctx_t *ctx) FAST_FUNC;
void sha3_hash(sha3_ctx_t *ctx, const void *buffer, size_t len) FAST_FUNC;
-void sha3_end(sha3_ctx_t *ctx, void *resbuf) FAST_FUNC;
+unsigned sha3_end(sha3_ctx_t *ctx, void *resbuf) FAST_FUNC;
+/* TLS benefits from knowing that sha1 and sha256 share these. Give them "agnostic" names too */
+typedef struct md5_ctx_t md5sha_ctx_t;
+#define md5sha_hash md5_hash
+#define sha_end sha1_end
extern uint32_t *global_crc32_table;
uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC;
#define bb_dev_null "/dev/null"
extern const char bb_busybox_exec_path[] ALIGN1;
-/* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
- * but I want to save a few bytes here */
-extern const char bb_PATH_root_path[] ALIGN1; /* "PATH=/sbin:/usr/sbin:/bin:/usr/bin" */
+/* allow default system PATH to be extended via CFLAGS */
+#ifndef BB_ADDITIONAL_PATH
+#define BB_ADDITIONAL_PATH ""
+#endif
+#define BB_PATH_ROOT_PATH "PATH=/sbin:/usr/sbin:/bin:/usr/bin" BB_ADDITIONAL_PATH
+extern const char bb_PATH_root_path[] ALIGN1; /* BB_PATH_ROOT_PATH */
#define bb_default_root_path (bb_PATH_root_path + sizeof("PATH"))
+/* util-linux manpage says /sbin:/bin:/usr/sbin:/usr/bin,
+ * but I want to save a few bytes here:
+ */
#define bb_default_path (bb_PATH_root_path + sizeof("PATH=/sbin:/usr/sbin"))
extern const int const_int_0;
projects / oweals / busybox.git / blobdiff