X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=error.h;h=55bd3ba6b7a698f3d9370c9b24af67411daa4a3e;hp=469b85be0ebd40dc53ab7a9ba93c061b80fe4d62;hb=cf749f79f1c353cc5aac1013aeef5ed0eb0f63ee;hpb=19d9318abf42debb15d833d4e56ab636893285c3;ds=sidebyside diff --git a/error.h b/error.h index 469b85be..55bd3ba6 100644 --- a/error.h +++ b/error.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2006-2007 Andre Noll + * Copyright (C) 2006-2008 Andre Noll * * Licensed under the GPL v2. For licencing details see COPYING. */ @@ -27,9 +27,14 @@ DEFINE_ERRLIST_OBJECT_ENUM; #define AFH_COMMON_ERRORS #define RBTREE_ERRORS #define RECV_ERRORS +#define SEND_COMMON_ERRORS extern const char **para_errlist[]; +#define ACL_ERRORS \ + PARA_ERROR(ACL_PERM, "access denied by acl"), \ + + #define FSCK_ERRORS \ PARA_ERROR(FSCK_SYNTAX, "fsck syntax error"), \ PARA_ERROR(RANGE_VIOLATION, "range violation detected, very bad"), \ @@ -55,7 +60,6 @@ extern const char **para_errlist[]; PARA_ERROR(ALREADY_MAPPED, "file already mapped"), \ PARA_ERROR(BAD_SIZE, "invalid size specified"), \ PARA_ERROR(TRUNC, "failed to truncate file"), \ - PARA_ERROR(UNLINK, "failed to remove file"), \ PARA_ERROR(BAD_TABLE, "table not open"), \ PARA_ERROR(BAD_TABLE_DESC, "invalid table description"), \ PARA_ERROR(RB_KEY_EXISTS, "key already exists in rbtree"), \ @@ -64,8 +68,6 @@ extern const char **para_errlist[]; PARA_ERROR(INDEX_CORRUPTION, "index corruption detected"), \ PARA_ERROR(INVALID_OBJECT, "reference to invalid object"), \ PARA_ERROR(STAT, "can not stat file"), \ - PARA_ERROR(FSTAT, "fstat error"), \ - PARA_ERROR(RENAME, "rename failed"), \ PARA_ERROR(WRITE, "write error"), \ PARA_ERROR(LSEEK, "lseek error"), \ PARA_ERROR(BUSY, "table is busy"), \ @@ -91,7 +93,6 @@ extern const char **para_errlist[]; #define MOOD_ERRORS \ PARA_ERROR(MOOD_SYNTAX, "mood syntax error"), \ PARA_ERROR(NO_MOOD, "no mood available"), \ - PARA_ERROR(MOOD_LOADED, "mood loaded"), \ PARA_ERROR(NOT_ADMISSIBLE, "file is not admissible"), \ @@ -107,7 +108,6 @@ extern const char **para_errlist[]; #define PLAYLIST_ERRORS \ - PARA_ERROR(NO_PLAYLIST, "no valid playlist found"), \ PARA_ERROR(PLAYLIST_LOADED, ""), /* not really an error */ \ PARA_ERROR(PATH_FOUND, ""), /* not really an error */ \ PARA_ERROR(PLAYLIST_EMPTY, "attempted to load empty playlist"), \ @@ -171,7 +171,6 @@ extern const char **para_errlist[]; #define NET_ERRORS \ - PARA_ERROR(CONNECT, "connect error"), \ PARA_ERROR(NAME_TOO_LONG, "name too long for struct sockaddr_un"), \ PARA_ERROR(ADDRESS_LOOKUP, "address lookup / socket creation failed"), \ PARA_ERROR(CHMOD, "failed to set socket mode"), \ @@ -197,8 +196,6 @@ extern const char **para_errlist[]; #define RECV_COMMON_ERRORS \ PARA_ERROR(RECV_SYNTAX, "recv syntax error"), \ PARA_ERROR(RECV_EOF, "end of file"), \ - PARA_ERROR(RECV_CONNECT, "connection failed"), \ - #define AUDIOD_ERRORS \ @@ -262,8 +259,6 @@ extern const char **para_errlist[]; #define STRING_ERRORS \ - PARA_ERROR(MKSTEMP, "mkstemp error: unable to create tmp file"), \ - PARA_ERROR(FCHMOD, "fchmod error: can not set mode"), \ PARA_ERROR(ATOI_OVERFLOW, "value too large"), \ PARA_ERROR(STRTOLL, "unknown strtoll error"), \ PARA_ERROR(ATOI_NO_DIGITS, "no digits found in string"), \ @@ -310,7 +305,6 @@ extern const char **para_errlist[]; PARA_ERROR(BAD_AUDIO_FILE_SUFFIX, "unknown suffix"), \ PARA_ERROR(AUDIO_FORMAT, "audio format not recognized"), \ PARA_ERROR(CHUNK, "unable to get chunk"), \ - PARA_ERROR(SHORT_AFS_READ, "short read from afs socket"), \ PARA_ERROR(NOFD, "did not receive open fd from afs"), \ @@ -324,14 +318,12 @@ extern const char **para_errlist[]; #define HTTP_SEND_ERRORS \ - PARA_ERROR(WRITE_OK, "can not check whether fd is writable"), \ - PARA_ERROR(SEND_QUEUED_CHUNK, "failed to send queued chunk"), \ + PARA_ERROR(MAX_CLIENTS, "maximal number of clients exceeded"), \ #define COMMAND_ERRORS \ PARA_ERROR(COMMAND_SYNTAX, "syntax error in command"), \ PARA_ERROR(AUTH, "did not receive auth request"), \ - PARA_ERROR(BAD_SELECTOR, "no such audio file selector"), \ PARA_ERROR(NO_AUDIO_FILE, "no audio file"), \ PARA_ERROR(BAD_CMD, "invalid command"), \ PARA_ERROR(PERM, "permission denied"), \ @@ -350,23 +342,15 @@ extern const char **para_errlist[]; PARA_ERROR(SHM_DETACH, "can not detach shared memory area"), \ -#define DCCP_ERRORS \ - PARA_ERROR(DCCP_SOCKET, "can not create dccp socket"), \ - - #define DCCP_RECV_ERRORS \ PARA_ERROR(DCCP_OVERRUN, "dccp output buffer buffer overrun"), \ #define DCCP_SEND_ERRORS \ - PARA_ERROR(DCCP_WRITE, "dccp write error"), \ #define FD_ERRORS \ PARA_ERROR(FGETS, "fgets error"), \ - PARA_ERROR(CHDIR, "failed to change directory"), \ - PARA_ERROR(OPEN, "failed to open file"), \ - PARA_ERROR(CHDIR_PERM, "insufficient permissions to chdir"), \ PARA_ERROR(EMPTY, "file empty"), \ PARA_ERROR(MMAP, "mmap error"), \ PARA_ERROR(MUNMAP, "munmap failed"), \ @@ -389,8 +373,6 @@ extern const char **para_errlist[]; PARA_ERROR(HW_PARAMS, "unable to install hw params"), \ PARA_ERROR(SW_PARAMS, "unable to install sw params"), \ PARA_ERROR(BAD_PERIOD, "can not use period equal to buffer size"), \ - PARA_ERROR(GET_XFER, "unable to obtain xfer align"), \ - PARA_ERROR(SET_XFER, "snd_pcm_sw_params_set_xfer_align() failed"), \ PARA_ERROR(ALSA_WRITE, "alsa write error"), \ PARA_ERROR(PCM_OPEN, "unable to open pcm"), \ PARA_ERROR(SND_PCM_INFO, "pcm info error"), \ @@ -462,27 +444,48 @@ extern const char **para_errlist[]; */ #define ERRNUM_TO_INDEX(num) (((1 << SS_SHIFT) - 1) & (num)) +/** + * This bit indicates whether a number is considered a system error number + * If yes, the system errno is just the result of clearing this bit from + * the given number. + */ #define SYSTEM_ERROR_BIT 30 +/** Check whether the system error bit is set. */ #define IS_SYSTEM_ERROR(num) (!!((num) & (1 << SYSTEM_ERROR_BIT))) +/** Set the system error bit for the given number. */ #define ERRNO_TO_PARA_ERROR(num) ((num) | (1 << SYSTEM_ERROR_BIT)) -static inline int is_errno(int val, int _errno) +/** Check whether a given number is a system error number. + * + * \param num The value to be checked. + * \param _errno The system error number. + * + * \return True if \a num is paraslash's representation of the system + * error identified by \a _errno. + */ +_static_inline_ int is_errno(int num, int _errno) { - assert(val > 0 && _errno > 0); - return ERRNO_TO_PARA_ERROR(_errno) == val; + assert(num > 0 && _errno > 0); + return ERRNO_TO_PARA_ERROR(_errno) == num; } /** * Paraslash's version of strerror(3). * - * Expands to the error text of \a num (a string constant). + * \param num The error number. + * + * \return The error text of \a num. */ -#define PARA_STRERROR(num) IS_SYSTEM_ERROR(num)? \ - strerror((num) & ((1 << SYSTEM_ERROR_BIT) - 1)) : \ - para_errlist[ERRNUM_TO_SS(num)] [ERRNUM_TO_INDEX(num)] - +_static_inline_ const char *para_strerror(int num) +{ + assert(num > 0); + if (IS_SYSTEM_ERROR(num)) + return strerror((num) & ((1 << SYSTEM_ERROR_BIT) - 1)); + else + return para_errlist[ERRNUM_TO_SS(num)][ERRNUM_TO_INDEX(num)]; +} /** * Define the error list for one subsystem. #