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gpg-error.h/
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/* gpg-error.h or gpgrt.h - Common code for GnuPG and others. -*- c -*- * Copyright (C) 2001-2018 g10 Code GmbH * * This file is part of libgpg-error (aka libgpgrt). * * libgpg-error is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * libgpg-error is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, see <https://www.gnu.org/licenses/>. * SPDX-License-Identifier: LGPL-2.1+ * * Do not edit. Generated from gpg-error.h.in. */
/* The GnuPG project consists of many components. Error codes are * exchanged between all components. The common error codes and their * user-presentable descriptions are kept into a shared library to * allow adding new error codes and components without recompiling any * of the other components. In addition to error codes this library * also features several other groups of functions which are common to * all GnuPG components. They may be used by independet project as * well. The interfaces will not change in a backward incompatible way. * * An error code together with an error source build up an error * value. As the error value is been passed from one component to * another, it preserves the information about the source and nature * of the error. * * A component of the GnuPG project can define the following macros to * tune the behaviour of the library: * * GPG_ERR_SOURCE_DEFAULT: Define to an error source of type * gpg_err_source_t to make that source the default for gpg_error(). * Otherwise GPG_ERR_SOURCE_UNKNOWN is used as default. * * GPG_ERR_ENABLE_GETTEXT_MACROS: Define to provide macros to map the * internal gettext API to standard names. This has only an effect on * Windows platforms. * * GPGRT_ENABLE_ES_MACROS: Define to provide "es_" macros for the * estream functions. * * GPGRT_ENABLE_LOG_MACROS: Define to provide short versions of the * log functions. * * GPGRT_ENABLE_ARGPARSE_MACROS: Needs to be defined to provide the * mandatory macros of the argparse interface. */
/* This is one more than the largest allowed entry. */ GPG_ERR_CODE_DIM = 65536 } gpg_err_code_t;
/* The error value type gpg_error_t. */
/* We would really like to use bit-fields in a struct, but using * structs as return values can cause binary compatibility issues, in * particular if you want to do it efficiently (also see * -freg-struct-return option to GCC). */ typedef unsigned int gpg_error_t;
/* We use the lowest 16 bits of gpg_error_t for error codes. The 16th * bit indicates system errors. */ #define GPG_ERR_CODE_MASK (GPG_ERR_CODE_DIM - 1)
/* Bits 17 to 24 are reserved. */
/* We use the upper 7 bits of gpg_error_t for error sources. */ #define GPG_ERR_SOURCE_MASK (GPG_ERR_SOURCE_DIM - 1) #define GPG_ERR_SOURCE_SHIFT 24
/* The highest bit is reserved. It shouldn't be used to prevent * potential negative numbers when transmitting error values as * text. */
/* The used and unused attributes. * I am not sure since when the unused attribute is really supported. * In any case it it only needed for gcc versions which print a * warning. Thus let us require gcc >= 3.5. */ #if _GPG_ERR_GCC_VERSION >= 40000 # define GPGRT_ATTR_USED __attribute__ ((used)) #else # define GPGRT_ATTR_USED #endif #if _GPG_ERR_GCC_VERSION >= 30500 # define GPGRT_ATTR_UNUSED __attribute__ ((unused)) #else # define GPGRT_ATTR_UNUSED #endif
/* A macro defined if a GCC style __FUNCTION__ macro is available. */ #undef GPGRT_HAVE_MACRO_FUNCTION #if _GPG_ERR_GCC_VERSION >= 20500 # define GPGRT_HAVE_MACRO_FUNCTION 1 #endif
/* A macro defined if the pragma GCC push_options is available. */ #undef GPGRT_HAVE_PRAGMA_GCC_PUSH #if _GPG_ERR_GCC_VERSION >= 40400 # define GPGRT_HAVE_PRAGMA_GCC_PUSH 1 #endif
/* Detect LeakSanitizer (LSan) support for GCC and Clang based on * whether AddressSanitizer (ASAN) is enabled via -fsanitize=address). * Note that -fsanitize=leak just affect the linker options which * cannot be detected here. In that case you have to define the * GPGRT_HAVE_LEAK_SANITIZER macro manually. */ #ifdef __GNUC__ # ifdef __SANITIZE_ADDRESS__ # define GPGRT_HAVE_LEAK_SANITIZER # elif defined(__has_feature) # if __has_feature(address_sanitizer) # define GPGRT_HAVE_LEAK_SANITIZER # endif # endif #endif
/* The new name for the inline macro. */ #define GPGRT_INLINE GPG_ERR_INLINE
#ifdef GPGRT_HAVE_LEAK_SANITIZER # include <sanitizer/lsan_interface.h> #endif
/* Initialize the library. This function should be run early. */ gpg_error_t gpg_err_init (void) _GPG_ERR_CONSTRUCTOR;
/* If this is defined, the library is already initialized by the constructor and does not need to be initialized explicitely. */ #undef GPG_ERR_INITIALIZED #ifdef _GPG_ERR_HAVE_CONSTRUCTOR # define GPG_ERR_INITIALIZED 1 # define gpgrt_init() do { gpg_err_init (); } while (0) #else # define gpgrt_init() do { ; } while (0) #endif
/* See the source on how to use the deinit function; it is usually not required. */ void gpg_err_deinit (int mode);
/* Construct an error value from an error code and source. Within a * subsystem, use gpg_error. */ static GPG_ERR_INLINE gpg_error_t gpg_err_make (gpg_err_source_t source, gpg_err_code_t code) { return code == GPG_ERR_NO_ERROR ? GPG_ERR_NO_ERROR : (((source & GPG_ERR_SOURCE_MASK) << GPG_ERR_SOURCE_SHIFT) | (code & GPG_ERR_CODE_MASK)); }
/* The user should define GPG_ERR_SOURCE_DEFAULT before including this * file to specify a default source for gpg_error. */ #ifndef GPG_ERR_SOURCE_DEFAULT #define GPG_ERR_SOURCE_DEFAULT GPG_ERR_SOURCE_UNKNOWN #endif
/* Retrieve the error code from an error value. */ static GPG_ERR_INLINE gpg_err_code_t gpg_err_code (gpg_error_t err) { return (gpg_err_code_t) (err & GPG_ERR_CODE_MASK); }
/* Retrieve the error source from an error value. */ static GPG_ERR_INLINE gpg_err_source_t gpg_err_source (gpg_error_t err) { return (gpg_err_source_t) ((err >> GPG_ERR_SOURCE_SHIFT) & GPG_ERR_SOURCE_MASK); }
/* String functions. */
/* Return a pointer to a string containing a description of the error * code in the error value ERR. This function is not thread-safe. */ const char *gpg_strerror (gpg_error_t err);
/* Return the error string for ERR in the user-supplied buffer BUF of * size BUFLEN. This function is, in contrast to gpg_strerror, * thread-safe if a thread-safe strerror_r() function is provided by * the system. If the function succeeds, 0 is returned and BUF * contains the string describing the error. If the buffer was not * large enough, ERANGE is returned and BUF contains as much of the * beginning of the error string as fits into the buffer. */ int gpg_strerror_r (gpg_error_t err, char *buf, size_t buflen);
/* Return a pointer to a string containing a description of the error * source in the error value ERR. */ const char *gpg_strsource (gpg_error_t err);
/* * Mapping of system errors (errno). */
/* Retrieve the error code for the system error ERR. This returns * GPG_ERR_UNKNOWN_ERRNO if the system error is not mapped (report * this). */ gpg_err_code_t gpg_err_code_from_errno (int err);
/* Retrieve the system error for the error code CODE. This returns 0 * if CODE is not a system error code. */ int gpg_err_code_to_errno (gpg_err_code_t code);
/* Retrieve the error code directly from the ERRNO variable. This * returns GPG_ERR_UNKNOWN_ERRNO if the system error is not mapped * (report this) and GPG_ERR_MISSING_ERRNO if ERRNO has the value 0. */ gpg_err_code_t gpg_err_code_from_syserror (void);
/* Set the ERRNO variable. This function is the preferred way to set * ERRNO due to peculiarities on WindowsCE. */ void gpg_err_set_errno (int err);
/* Return or check the version. Both functions are identical. */ const char *gpgrt_check_version (const char *req_version); const char *gpg_error_check_version (const char *req_version);
/* System specific type definitions. */ #include <sys/types.h>
/* A getenv replacement which mallocs the returned string. */ char *gpgrt_getenv (const char *name);
/* A setenv and a unsetenv replacement.*/ gpg_err_code_t gpgrt_setenv (const char *name, const char *value, int overwrite); #define gpgrt_unsetenv(n) gpgrt_setenv ((n), NULL, 1)
/* A wrapper around mkdir using a string for the mode. */ gpg_err_code_t gpgrt_mkdir (const char *name, const char *modestr);
/* A simple wrapper around chdir. */ gpg_err_code_t gpgrt_chdir (const char *name);
/* Return the current WD as a malloced string. */ char *gpgrt_getcwd (void);
/* * Lock functions. */
#include <pthread.h> typedef struct { long _vers; union { volatile char _priv[sizeof(pthread_mutex_t)]; long _x_align; long *_xp_align; } u; } gpgrt_lock_t;
#define GPGRT_LOCK_INITIALIZER {1,{{0}}}
#define GPGRT_LOCK_DEFINE(name) \ static gpgrt_lock_t name = GPGRT_LOCK_INITIALIZER
/* NB: If GPGRT_LOCK_DEFINE is not used, zero out the lock variable before passing it to gpgrt_lock_init. */ gpg_err_code_t gpgrt_lock_init (gpgrt_lock_t *lockhd); gpg_err_code_t gpgrt_lock_lock (gpgrt_lock_t *lockhd); gpg_err_code_t gpgrt_lock_trylock (gpgrt_lock_t *lockhd); gpg_err_code_t gpgrt_lock_unlock (gpgrt_lock_t *lockhd); gpg_err_code_t gpgrt_lock_destroy (gpgrt_lock_t *lockhd);
/* * Thread functions. */
gpg_err_code_t gpgrt_yield (void);
/* * Estream */
/* The definition of this struct is entirely private. You must not use it for anything. It is only here so some functions can be implemented as macros. */ struct _gpgrt_stream_internal; struct _gpgrt__stream { /* The layout of this struct must never change. It may be grown, but only if all functions which access the new members are versioned. */
/* Various flags. */ struct { unsigned int magic: 16; unsigned int writing: 1; unsigned int reserved: 15; } flags;
/* A pointer to the stream buffer. */ unsigned char *buffer;
/* The size of the buffer in bytes. */ size_t buffer_size;
/* The length of the usable data in the buffer, only valid when in read mode (see flags). */ size_t data_len;
/* The current position of the offset pointer, valid in read and write mode. */ size_t data_offset;
/* The number of unread bytes. */ size_t unread_data_len;
/* A pointer to our internal data for this stream. */ struct _gpgrt_stream_internal *intern; };
/* The opaque type for an estream. */ typedef struct _gpgrt__stream *gpgrt_stream_t; #ifdef GPGRT_ENABLE_ES_MACROS typedef struct _gpgrt__stream *estream_t; #endif
enum gpgrt_syshd_types { GPGRT_SYSHD_NONE = 0, /* No system handle available. */ GPGRT_SYSHD_FD = 1, /* A file descriptor as returned by open(). */ GPGRT_SYSHD_SOCK = 2, /* A socket as returned by socket(). */ GPGRT_SYSHD_RVID = 3, /* A rendezvous id (see libassuan's gpgcedev.c). */ GPGRT_SYSHD_HANDLE = 4 /* A HANDLE object (Windows). */ };
/* The object used with gpgrt_poll. */ struct _gpgrt_poll_s { gpgrt_stream_t stream; unsigned int want_read:1; unsigned int want_write:1; unsigned int want_oob:1; unsigned int want_rdhup:1; unsigned int _reserv1:4; unsigned int got_read:1; unsigned int got_write:1; unsigned int got_oob:1; unsigned int got_rdhup:1; unsigned int _reserv2:4; unsigned int got_err:1; unsigned int got_hup:1; unsigned int got_nval:1; unsigned int _reserv3:4; unsigned int ignore:1; unsigned int user:8; /* For application use. */ }; typedef struct _gpgrt_poll_s gpgrt_poll_t; #ifdef GPGRT_ENABLE_ES_MACROS typedef struct _gpgrt_poll_s es_poll_t; #endif
int gpgrt_fflush (gpgrt_stream_t stream); int gpgrt_fseek (gpgrt_stream_t stream, long int offset, int whence); int gpgrt_fseeko (gpgrt_stream_t stream, gpgrt_off_t offset, int whence); long int gpgrt_ftell (gpgrt_stream_t stream); gpgrt_off_t gpgrt_ftello (gpgrt_stream_t stream); void gpgrt_rewind (gpgrt_stream_t stream);
int gpgrt_fgetc (gpgrt_stream_t stream); int gpgrt_fputc (int c, gpgrt_stream_t stream);
int _gpgrt_getc_underflow (gpgrt_stream_t stream); /* (private) */ int _gpgrt_putc_overflow (int c, gpgrt_stream_t stream); /* (private) */
int gpgrt_fprintf (gpgrt_stream_t _GPGRT__RESTRICT stream, const char *_GPGRT__RESTRICT format, ...) GPGRT_ATTR_PRINTF(2,3); int gpgrt_fprintf_unlocked (gpgrt_stream_t _GPGRT__RESTRICT stream, const char *_GPGRT__RESTRICT format, ...) GPGRT_ATTR_PRINTF(2,3);
int gpgrt_printf (const char *_GPGRT__RESTRICT format, ...) GPGRT_ATTR_PRINTF(1,2); int gpgrt_printf_unlocked (const char *_GPGRT__RESTRICT format, ...) GPGRT_ATTR_PRINTF(1,2);
int gpgrt_vfprintf (gpgrt_stream_t _GPGRT__RESTRICT stream, const char *_GPGRT__RESTRICT format, va_list ap) GPGRT_ATTR_PRINTF(2,0); int gpgrt_vfprintf_unlocked (gpgrt_stream_t _GPGRT__RESTRICT stream, const char *_GPGRT__RESTRICT format, va_list ap) GPGRT_ATTR_PRINTF(2,0);
int gpgrt_setvbuf (gpgrt_stream_t _GPGRT__RESTRICT stream, char *_GPGRT__RESTRICT buf, int mode, size_t size); void gpgrt_setbuf (gpgrt_stream_t _GPGRT__RESTRICT stream, char *_GPGRT__RESTRICT buf);
void gpgrt_set_binary (gpgrt_stream_t stream); int gpgrt_set_nonblock (gpgrt_stream_t stream, int onoff); int gpgrt_get_nonblock (gpgrt_stream_t stream);
int gpgrt_poll (gpgrt_poll_t *fdlist, unsigned int nfds, int timeout);
/* * Spawn functions (Not yet available) */ #define GPGRT_SPAWN_NONBLOCK 16 /* Set the streams to non-blocking. */ #define GPGRT_SPAWN_RUN_ASFW 64 /* Use AllowSetForegroundWindow on W32. */ #define GPGRT_SPAWN_DETACHED 128 /* Start the process in the background. */
#if 0
/* Function and convenience macros to create pipes. */ gpg_err_code_t gpgrt_make_pipe (int filedes[2], gpgrt_stream_t *r_fp, int direction, int nonblock); #define gpgrt_create_pipe(a) gpgrt_make_pipe ((a),NULL, 0, 0); #define gpgrt_create_inbound_pipe(a,b,c) gpgrt_make_pipe ((a), (b), -1,(c)); #define gpgrt_create_outbound_pipe(a,b,c) gpgrt_make_pipe ((a), (b), 1,(c));
/* Fork and exec PGMNAME. */ gpg_err_code_t gpgrt_spawn_process (const char *pgmname, const char *argv[], int *execpt, void (*preexec)(void), unsigned int flags, gpgrt_stream_t *r_infp, gpgrt_stream_t *r_outfp, gpgrt_stream_t *r_errfp, pid_t *pid);
/* Fork and exec PGNNAME and connect the process to the given FDs. */ gpg_err_code_t gpgrt_spawn_process_fd (const char *pgmname, const char *argv[], int infd, int outfd, int errfd, pid_t *pid);
/* Fork and exec PGMNAME as a detached process. */ gpg_err_code_t gpgrt_spawn_process_detached (const char *pgmname, const char *argv[], const char *envp[] );
/* Wait for a single process. */ gpg_err_code_t gpgrt_wait_process (const char *pgmname, pid_t pid, int hang, int *r_exitcode);
/* Wait for a multiple processes. */ gpg_err_code_t gpgrt_wait_processes (const char **pgmnames, pid_t *pids, size_t count, int hang, int *r_exitcodes);
/* Kill the process identified by PID. */ void gpgrt_kill_process (pid_t pid);
/* Release process resources identified by PID. */ void gpgrt_release_process (pid_t pid);
#endif /*0*/
/* * Option parsing. */
struct _gpgrt_argparse_internal_s; typedef struct { int *argc; /* Pointer to ARGC (value subject to change). */ char ***argv; /* Pointer to ARGV (value subject to change). */ unsigned int flags; /* Global flags. May be set prior to calling the parser. The parser may change the value. */ int err; /* Print error description for last option. Either 0, ARGPARSE_PRINT_WARNING or ARGPARSE_PRINT_ERROR. */ unsigned int lineno;/* The current line number. */ int r_opt; /* Returns option code. */ int r_type; /* Returns type of option value. */ union { int ret_int; long ret_long; unsigned long ret_ulong; char *ret_str; } r; /* Return values */
typedef struct { int short_opt; const char *long_opt; unsigned int flags; const char *description; /* Optional description. */ } gpgrt_opt_t;
#ifdef GPGRT_ENABLE_ARGPARSE_MACROS
/* Global flags for (gpgrt_argparse_t).flags. */ #define ARGPARSE_FLAG_KEEP 1 /* Do not remove options form argv. */ #define ARGPARSE_FLAG_ALL 2 /* Do not stop at last option but return remaining args with R_OPT set to -1. */ #define ARGPARSE_FLAG_MIXED 4 /* Assume options and args are mixed. */ #define ARGPARSE_FLAG_NOSTOP 8 /* Do not stop processing at "--". */ #define ARGPARSE_FLAG_ARG0 16 /* Do not skip the first arg. */ #define ARGPARSE_FLAG_ONEDASH 32 /* Allow long options with one dash. */ #define ARGPARSE_FLAG_NOVERSION 64 /* No output for "--version". */ #define ARGPARSE_FLAG_RESET 128 /* Request to reset the internal state. */ #define ARGPARSE_FLAG_STOP_SEEN 256 /* Set to true if a "--" has been seen. */ #define ARGPARSE_FLAG_NOLINENO 512 /* Do not zero the lineno field. */
/* Constants for (gpgrt_argparse_t).err. */ #define ARGPARSE_PRINT_WARNING 1 /* Print a diagnostic. */ #define ARGPARSE_PRINT_ERROR 2 /* Print a diagnostic and call exit. */
/* Flags for the option descriptor (gpgrt_opt_t)->flags. Note that * a TYPE constant may be or-ed with the OPT constants. */ #define ARGPARSE_TYPE_NONE 0 /* Does not take an argument. */ #define ARGPARSE_TYPE_INT 1 /* Takes an int argument. */ #define ARGPARSE_TYPE_STRING 2 /* Takes a string argument. */ #define ARGPARSE_TYPE_LONG 3 /* Takes a long argument. */ #define ARGPARSE_TYPE_ULONG 4 /* Takes an unsigned long argument. */ #define ARGPARSE_OPT_OPTIONAL (1<<3) /* Argument is optional. */ #define ARGPARSE_OPT_PREFIX (1<<4) /* Allow 0x etc. prefixed values. */ #define ARGPARSE_OPT_IGNORE (1<<6) /* Ignore command or option. */ #define ARGPARSE_OPT_COMMAND (1<<7) /* The argument is a command. */
/* A set of macros to make option definitions easier to read. */ #define ARGPARSE_x(s,l,t,f,d) \ { (s), (l), ARGPARSE_TYPE_ ## t | (f), (d) }
/* Mark the end of the list (mandatory). */ #define ARGPARSE_end() \ { 0, NULL, 0, NULL }
#endif /* GPGRT_ENABLE_ARGPARSE_MACROS */
/* Take care: gpgrt_argparse keeps state in ARG and requires that * either ARGPARSE_FLAG_RESET is used after OPTS has been changed or * gpgrt_argparse (NULL, ARG, NULL) is called first. */ int gpgrt_argparse (gpgrt_stream_t fp, gpgrt_argparse_t *arg, gpgrt_opt_t *opts); void gpgrt_usage (int level); const char *gpgrt_strusage (int level); void gpgrt_set_strusage (const char *(*f)(int)); void gpgrt_set_usage_outfnc (int (*f)(int, const char *)); void gpgrt_set_fixed_string_mapper (const char *(*f)(const char*));
#ifdef __cplusplus } #endif #endif /* GPGRT_H */ #endif /* GPG_ERROR_H */ /* Local Variables: buffer-read-only: t End: */