3 * Netatalk utility functions
5 * Utility functions for these areas: \n
8 * * misc UNIX function wrappers, eg for getcwd
12 #define _ATALK_UTIL_H 1
14 #include <sys/types.h>
15 #include <sys/socket.h>
19 #include <atalk/unicode.h>
20 #include <atalk/bstrlib.h>
22 /* exit error codes */
23 #define EXITERR_CLNT 1 /* client related error */
24 #define EXITERR_CONF 2 /* error in config files/cmd line parameters */
25 #define EXITERR_SYS 3 /* local system error */
27 /* Print a SBT and exit */
28 #define AFP_PANIC(why) \
30 netatalk_panic(why); \
34 /* LOG assert errors */
36 #define AFP_ASSERT(b) \
47 #define MIN(a, b) ((a) < (b) ? (a) : (b))
51 #define MAX(a, b) ((a) > (b) ? (a) : (b))
54 #define STRCMP(a,b,c) (strcmp(a,c) b 0)
55 #define ZERO_STRUCT(a) memset(&(a), 0, sizeof(a))
56 #define ZERO_STRUCTP(a) memset((a), 0, sizeof(a))
58 #define MAX(a,b) ((a) > (b) ? a : b)
61 #define MIN(a,b) ((a) < (b) ? a : b)
64 #if BYTE_ORDER == BIG_ENDIAN
67 #else /* BYTE_ORDER == BIG_ENDIAN */
68 #define hton64(x) ((uint64_t) (htonl(((x) >> 32) & 0xffffffffLL)) | \
69 (uint64_t) ((htonl(x) & 0xffffffffLL) << 32))
70 #define ntoh64(x) (hton64(x))
71 #endif /* BYTE_ORDER == BIG_ENDIAN */
74 extern ssize_t sys_sendfile (int __out_fd, int __in_fd, off_t *__offset,size_t __count);
77 extern const int _diacasemap[], _dialowermap[];
79 extern char **getifacelist(void);
80 extern void freeifacelist(char **);
82 #define diatolower(x) _dialowermap[(unsigned char) (x)]
83 #define diatoupper(x) _diacasemap[(unsigned char) (x)]
84 extern void bprint (char *, int);
85 extern int strdiacasecmp (const char *, const char *);
86 extern int strndiacasecmp (const char *, const char *, size_t);
87 extern pid_t server_lock (char * /*program*/, char * /*file*/, int /*debug*/);
88 extern int check_lockfile (const char *program, const char *pidfile);
89 extern int create_lockfile(const char *program, const char *pidfile);
90 extern void fault_setup (void (*fn)(void *));
91 extern void netatalk_panic(const char *why);
92 #define server_unlock(x) (unlink(x))
95 extern void *mod_open (const char *);
96 extern void *mod_symbol (void *, const char *);
97 extern void mod_close (void *);
98 #define mod_error() ""
99 #else /* ! HAVE_DLFCN_H */
104 #endif /* ! RTLD_NOW */
106 /* NetBSD doesn't like RTLD_NOW for dlopen (it fails). Use RTLD_LAZY.
107 * OpenBSD currently does not use the second arg for dlopen(). For
108 * future compatibility we define DL_LAZY */
110 #define mod_open(a) dlopen(a, RTLD_LAZY)
111 #elif defined(__OpenBSD__)
112 #define mod_open(a) dlopen(a, DL_LAZY)
113 #else /* ! __NetBSD__ && ! __OpenBSD__ */
114 #define mod_open(a) dlopen(a, RTLD_NOW)
115 #endif /* __NetBSD__ */
117 #ifndef DLSYM_PREPEND_UNDERSCORE
118 #define mod_symbol(a, b) dlsym(a, b)
119 #else /* ! DLSYM_PREPEND_UNDERSCORE */
120 extern void *mod_symbol (void *, const char *);
121 #endif /* ! DLSYM_PREPEND_UNDERSCORE */
122 #define mod_error() dlerror()
123 #define mod_close(a) dlclose(a)
124 #endif /* ! HAVE_DLFCN_H */
126 /******************************************************************
128 ******************************************************************/
130 extern int lock_reg(int fd, int cmd, int type, off_t offest, int whence, off_t len);
131 #define read_lock(fd, offset, whence, len) \
132 lock_reg((fd), F_SETLK, F_RDLCK, (offset), (whence), (len))
133 #define write_lock(fd, offset, whence, len) \
134 lock_reg((fd), F_SETLK, F_WRLCK, (offset), (whence), (len))
135 #define unlock(fd, offset, whence, len) \
136 lock_reg((fd), F_SETLK, F_UNLCK, (offset), (whence), (len))
138 /******************************************************************
140 ******************************************************************/
142 extern int setnonblock(int fd, int cmd);
143 extern ssize_t readt(int socket, void *data, const size_t length, int setnonblocking, int timeout);
144 extern ssize_t writet(int socket, void *data, const size_t length, int setnonblocking, int timeout);
145 extern const char *getip_string(const struct sockaddr *sa);
146 extern unsigned int getip_port(const struct sockaddr *sa);
147 extern void apply_ip_mask(struct sockaddr *ai, int maskbits);
148 extern int compare_ip(const struct sockaddr *sa1, const struct sockaddr *sa2);
150 /* Structures and functions dealing with dynamic pollfd arrays */
151 enum fdtype {IPC_FD, LISTEN_FD, DISASOCIATED_IPC_FD};
153 enum fdtype fdtype; /* IPC fd or listening socket fd */
154 void *data; /* pointer to AFPconfig for listening socket and *
155 * pointer to afp_child_t for IPC fd */
158 extern void fdset_add_fd(int maxconns,
159 struct pollfd **fdsetp,
160 struct polldata **polldatap,
166 extern void fdset_del_fd(struct pollfd **fdsetp,
167 struct polldata **polldatap,
171 extern int send_fd(int socket, int fd);
172 extern int recv_fd(int fd, int nonblocking);
174 /******************************************************************
176 *****************************************************************/
178 extern const char *abspath(const char *name);
179 extern const char *getcwdpath(void);
180 extern const char *fullpathname(const char *);
181 extern char *stripped_slashes_basename(char *p);
182 extern int lchdir(const char *dir);
183 extern void randombytes(void *buf, int n);
184 extern int daemonize(int nochdir, int noclose);
186 /******************************************************************
188 *****************************************************************/
190 extern bstring rel_path_in_vol(const char *path, const char *volpath);
192 #endif /* _ATALK_UTIL_H */