/* lib.h - header file for lib directory * * Copyright 2006 Rob Landley <rob@landley.net> */ struct ptr_len { void *ptr; long len; }; struct str_len { char *str; long len; }; // llist.c // All these list types can be handled by the same code because first element // is always next pointer, so next = (mytype *)&struct. (The payloads are // named differently to catch using the wrong type early.) struct string_list { struct string_list *next; char str[0]; }; struct arg_list { struct arg_list *next; char *arg; }; struct double_list { struct double_list *next, *prev; char *data; }; struct num_cache { struct num_cache *next; long long num; char data[]; }; void llist_free_arg(void *node); void llist_free_double(void *node); void llist_traverse(void *list, void (*using)(void *node)); void *llist_pop(void *list); // actually void **list void *dlist_pop(void *list); // actually struct double_list **list void dlist_add_nomalloc(struct double_list **list, struct double_list *new); struct double_list *dlist_add(struct double_list **list, char *data); void *dlist_terminate(void *list); struct num_cache *get_num_cache(struct num_cache *cache, long long num); struct num_cache *add_num_cache(struct num_cache **cache, long long num, void *data, int len); // args.c void get_optflags(void); // dirtree.c // Values returnable from callback function (bitfield, or them together) // Default with no callback is 0 // Add this node to the tree #define DIRTREE_SAVE 1 // Recurse into children #define DIRTREE_RECURSE 2 // Call again after handling all children of this directory // (Ignored for non-directories, sets linklen = -1 before second call.) #define DIRTREE_COMEAGAIN 4 // Follow symlinks to directories #define DIRTREE_SYMFOLLOW 8 // Don't warn about failure to stat #define DIRTREE_SHUTUP 16 // Breadth first traversal, conserves filehandles at the expense of memory #define DIRTREE_BREADTH 32 // skip non-numeric entries #define DIRTREE_PROC 64 // Don't look at any more files in this directory. #define DIRTREE_ABORT 256 #define DIRTREE_ABORTVAL ((struct dirtree *)1) struct dirtree { struct dirtree *next, *parent, *child; long extra; // place for user to store their stuff (can be pointer) struct stat st; char *symlink; int dirfd; char again; char name[]; }; int isdotdot(char *name); struct dirtree *dirtree_add_node(struct dirtree *p, char *name, int flags); char *dirtree_path(struct dirtree *node, int *plen); int dirtree_notdotdot(struct dirtree *catch); int dirtree_parentfd(struct dirtree *node); int dirtree_recurse(struct dirtree *node, int (*callback)(struct dirtree *node), int dirfd, int symfollow); struct dirtree *dirtree_flagread(char *path, int flags, int (*callback)(struct dirtree *node)); struct dirtree *dirtree_read(char *path, int (*callback)(struct dirtree *node)); // help.c void show_help(FILE *out); // Tell xopen and friends to print warnings but return -1 as necessary // The largest O_BLAH flag so far is arch/alpha's O_PATH at 0x800000 so // plenty of headroom. #define WARN_ONLY (1<<31) // xwrap.c void xstrncpy(char *dest, char *src, size_t size); void xstrncat(char *dest, char *src, size_t size); void _xexit(void) noreturn; void xexit(void) noreturn; void *xmmap(void *addr, size_t length, int prot, int flags, int fd, off_t off); void *xmalloc(size_t size); void *xzalloc(size_t size); void *xrealloc(void *ptr, size_t size); char *xstrndup(char *s, size_t n); char *xstrdup(char *s); void *xmemdup(void *s, long len); char *xmprintf(char *format, ...) printf_format; void xprintf(char *format, ...) printf_format; void xputs(char *s); void xputc(char c); void xflush(void); void xexec(char **argv); pid_t xpopen_both(char **argv, int *pipes); int xwaitpid(pid_t pid); int xpclose_both(pid_t pid, int *pipes); pid_t xpopen(char **argv, int *pipe, int isstdout); pid_t xpclose(pid_t pid, int pipe); int xrun(char **argv); int xpspawn(char **argv, int*pipes); void xaccess(char *path, int flags); void xunlink(char *path); int xcreate(char *path, int flags, int mode); int xopen(char *path, int flags); int xcreate_stdio(char *path, int flags, int mode); int xopen_stdio(char *path, int flags); int openro(char *path, int flags); int xopenro(char *path); void xpipe(int *pp); void xclose(int fd); int xdup(int fd); int notstdio(int fd); FILE *xfdopen(int fd, char *mode); FILE *xfopen(char *path, char *mode); size_t xread(int fd, void *buf, size_t len); void xreadall(int fd, void *buf, size_t len); void xwrite(int fd, void *buf, size_t len); off_t xlseek(int fd, off_t offset, int whence); char *xreadfile(char *name, char *buf, off_t len); int xioctl(int fd, int request, void *data); char *xgetcwd(void); void xstat(char *path, struct stat *st); char *xabspath(char *path, int exact); void xchdir(char *path); void xchroot(char *path); struct passwd *xgetpwuid(uid_t uid); struct group *xgetgrgid(gid_t gid); struct passwd *xgetpwnam(char *name); struct group *xgetgrnam(char *name); unsigned xgetuid(char *name); unsigned xgetgid(char *name); void xsetuser(struct passwd *pwd); char *xreadlink(char *name); double xstrtod(char *s); long xparsetime(char *arg, long units, long *fraction); void xpidfile(char *name); void xregcomp(regex_t *preg, char *rexec, int cflags); char *xtzset(char *new); void xsignal(int signal, void *handler); // lib.c void verror_msg(char *msg, int err, va_list va); void error_msg(char *msg, ...) printf_format; void perror_msg(char *msg, ...) printf_format; void error_exit(char *msg, ...) printf_format noreturn; void perror_exit(char *msg, ...) printf_format noreturn; void help_exit(char *msg, ...) printf_format noreturn; void error_msg_raw(char *msg); void perror_msg_raw(char *msg); void error_exit_raw(char *msg); void perror_exit_raw(char *msg); ssize_t readall(int fd, void *buf, size_t len); ssize_t writeall(int fd, void *buf, size_t len); off_t lskip(int fd, off_t offset); int mkpathat(int atfd, char *dir, mode_t lastmode, int flags); struct string_list **splitpath(char *path, struct string_list **list); char *readfileat(int dirfd, char *name, char *buf, off_t *len); char *readfile(char *name, char *buf, off_t len); void msleep(long miliseconds); int highest_bit(unsigned long l); int64_t peek_le(void *ptr, unsigned size); int64_t peek_be(void *ptr, unsigned size); int64_t peek(void *ptr, unsigned size); void poke(void *ptr, uint64_t val, int size); struct string_list *find_in_path(char *path, char *filename); long long estrtol(char *str, char **end, int base); long long xstrtol(char *str, char **end, int base); long long atolx(char *c); long long atolx_range(char *numstr, long long low, long long high); int stridx(char *haystack, char needle); int utf8towc(wchar_t *wc, char *str, unsigned len); char *strlower(char *s); char *strafter(char *haystack, char *needle); char *chomp(char *s); int unescape(char c); char *strend(char *str, char *suffix); int strstart(char **a, char *b); off_t fdlength(int fd); void loopfiles_rw(char **argv, int flags, int permissions, void (*function)(int fd, char *name)); void loopfiles(char **argv, void (*function)(int fd, char *name)); void loopfiles_lines(char **argv, void (*function)(char **pline, long len)); long long xsendfile(int in, int out); int wfchmodat(int rc, char *name, mode_t mode); int copy_tempfile(int fdin, char *name, char **tempname); void delete_tempfile(int fdin, int fdout, char **tempname); void replace_tempfile(int fdin, int fdout, char **tempname); void crc_init(unsigned int *crc_table, int little_endian); void base64_init(char *p); int yesno(int def); int qstrcmp(const void *a, const void *b); void create_uuid(char *uuid); char *show_uuid(char *uuid); char *next_printf(char *s, char **start); char *strnstr(char *line, char *str); int dev_minor(int dev); int dev_major(int dev); int dev_makedev(int major, int minor); struct passwd *bufgetpwuid(uid_t uid); struct group *bufgetgrgid(gid_t gid); int readlinkat0(int dirfd, char *path, char *buf, int len); int readlink0(char *path, char *buf, int len); int regexec0(regex_t *preg, char *string, long len, int nmatch, regmatch_t pmatch[], int eflags); char *getusername(uid_t uid); char *getgroupname(gid_t gid); void do_lines(int fd, void (*call)(char **pline, long len)); long environ_bytes(); #define HR_SPACE 1 // Space between number and units #define HR_B 2 // Use "B" for single byte units #define HR_1000 4 // Use decimal instead of binary units int human_readable(char *buf, unsigned long long num, int style); // linestack.c struct linestack { long len, max; struct ptr_len idx[]; }; void linestack_addstack(struct linestack **lls, struct linestack *throw, long pos); void linestack_insert(struct linestack **lls, long pos, char *line, long len); void linestack_append(struct linestack **lls, char *line); struct linestack *linestack_load(char *name); int crunch_escape(FILE *out, int cols, int wc); int crunch_rev_escape(FILE *out, int cols, int wc); int crunch_str(char **str, int width, FILE *out, char *escmore, int (*escout)(FILE *out, int cols, int wc)); int draw_str(char *start, int width); int utf8len(char *str); int utf8skip(char *str, int width); int draw_trim_esc(char *str, int padto, int width, char *escmore, int (*escout)(FILE *out, int cols,int wc)); int draw_trim(char *str, int padto, int width); // interestingtimes.c int xgettty(void); int terminal_size(unsigned *xx, unsigned *yy); int terminal_probesize(unsigned *xx, unsigned *yy); int scan_key_getsize(char *scratch, int miliwait, unsigned *xx, unsigned *yy); int set_terminal(int fd, int raw, struct termios *old); void xset_terminal(int fd, int raw, struct termios *old); int scan_key(char *scratch, int miliwait); void tty_esc(char *s); void tty_jump(int x, int y); void tty_reset(void); void tty_sigreset(int i); // net.c int xsocket(int domain, int type, int protocol); void xsetsockopt(int fd, int level, int opt, void *val, socklen_t len); struct addrinfo *xgetaddrinfo(char *host, char *port, int family, int socktype, int protocol, int flags); int xconnect(struct addrinfo *ai_arg); int xpoll(struct pollfd *fds, int nfds, int timeout); int pollinate(int in1, int in2, int out1, int out2, int timeout, int shutdown_timeout); // password.c int get_salt(char *salt, char * algo); // getmountlist.c struct mtab_list { struct mtab_list *next, *prev; struct stat stat; struct statvfs statvfs; char *dir; char *device; char *opts; char type[0]; }; void comma_args(struct arg_list *al, void *data, char *err, char *(*callback)(void *data, char *str, int len)); void comma_collate(char **old, char *new); char *comma_iterate(char **list, int *len); int comma_scan(char *optlist, char *opt, int clean); int comma_scanall(char *optlist, char *scanlist); int mountlist_istype(struct mtab_list *ml, char *typelist); struct mtab_list *xgetmountlist(char *path); // signal void generic_signal(int signal); void exit_signal(int signal); void sigatexit(void *handler); int sig_to_num(char *pidstr); char *num_to_sig(int sig); mode_t string_to_mode(char *mode_str, mode_t base); void mode_to_string(mode_t mode, char *buf); char *getbasename(char *name); void names_to_pid(char **names, int (*callback)(pid_t pid, char *name)); pid_t __attribute__((returns_twice)) xvforkwrap(pid_t pid); #define XVFORK() xvforkwrap(vfork()) // Wrapper to make xfuncs() return (via longjmp) instead of exiting. // Assigns true/false "did it exit" value to first argument. #define WOULD_EXIT(y, x) do { jmp_buf _noexit; \ int _noexit_res; \ toys.rebound = &_noexit; \ _noexit_res = setjmp(_noexit); \ if (!_noexit_res) do {x;} while(0); \ toys.rebound = 0; \ y = _noexit_res; \ } while(0); // Wrapper that discards true/false "did it exit" value. #define NOEXIT(x) WOULD_EXIT(_noexit_res, x) #define minof(a, b) ({typeof(a) aa = (a); typeof(b) bb = (b); aa<bb ? aa : bb;}) #define maxof(a, b) ({typeof(a) aa = (a); typeof(b) bb = (b); aa>bb ? aa : bb;}) // Functions in need of further review/cleanup #include "lib/pending.h"