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/* Function declarations for libiberty. Copyright 2001, 2002, 2005, 2007 Free Software Foundation, Inc. Note - certain prototypes declared in this header file are for functions whoes implementation copyright does not belong to the FSF. Those prototypes are present in this file for reference purposes only and their presence in this file should not construed as an indication of ownership by the FSF of the implementation of those functions in any way or form whatsoever. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. Written by Cygnus Support, 1994. The libiberty library provides a number of functions which are missing on some operating systems. We do not declare those here, to avoid conflicts with the system header files on operating systems that do support those functions. In this file we only declare those functions which are specific to libiberty. */ #ifndef LIBIBERTY_H #define LIBIBERTY_H #ifdef __cplusplus extern "C" { #endif #include "ansidecl.h" /* Get a definition for size_t. */ #include <stddef.h> /* Get a definition for va_list. */ #include <stdarg.h> #include <stdio.h> /* If the OS supports it, ensure that the supplied stream is setup to avoid any multi-threaded locking. Otherwise leave the FILE pointer unchanged. If the stream is NULL do nothing. */ extern void unlock_stream (FILE *); /* If the OS supports it, ensure that the standard I/O streams, stdin, stdout and stderr are setup to avoid any multi-threaded locking. Otherwise do nothing. */ extern void unlock_std_streams (void); /* Open and return a FILE pointer. If the OS supports it, ensure that the stream is setup to avoid any multi-threaded locking. Otherwise return the FILE pointer unchanged. */ extern FILE *fopen_unlocked (const char *, const char *); extern FILE *fdopen_unlocked (int, const char *); extern FILE *freopen_unlocked (const char *, const char *, FILE *); /* Build an argument vector from a string. Allocates memory using malloc. Use freeargv to free the vector. */ extern char **buildargv (const char *) ATTRIBUTE_MALLOC; /* Free a vector returned by buildargv. */ extern void freeargv (char **); /* Duplicate an argument vector. Allocates memory using malloc. Use freeargv to free the vector. */ extern char **dupargv (char **) ATTRIBUTE_MALLOC; /* Expand "@file" arguments in argv. */ extern void expandargv PARAMS ((int *, char ***)); /* Write argv to an @-file, inserting necessary quoting. */ extern int writeargv PARAMS ((char **, FILE *)); /* Return the last component of a path name. Note that we can't use a prototype here because the parameter is declared inconsistently across different systems, sometimes as "char *" and sometimes as "const char *" */ /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is undefined, we haven't run the autoconf check so provide the declaration without arguments. If it is 0, we checked and failed to find the declaration so provide a fully prototyped one. If it is 1, we found it so don't provide any declaration at all. */ #if !HAVE_DECL_BASENAME #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME) extern char *basename (const char *); #else /* Do not allow basename to be used if there is no prototype seen. We either need to use the above prototype or have one from autoconf which would result in HAVE_DECL_BASENAME being set. */ #define basename basename_cannot_be_used_without_a_prototype #endif #endif /* A well-defined basename () that is always compiled in. */ extern const char *lbasename (const char *); /* A well-defined realpath () that is always compiled in. */ extern char *lrealpath (const char *); /* Concatenate an arbitrary number of strings. You must pass NULL as the last argument of this function, to terminate the list of strings. Allocates memory using xmalloc. */ extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; /* Concatenate an arbitrary number of strings. You must pass NULL as the last argument of this function, to terminate the list of strings. Allocates memory using xmalloc. The first argument is not one of the strings to be concatenated, but if not NULL is a pointer to be freed after the new string is created, similar to the way xrealloc works. */ extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; /* Determine the length of concatenating an arbitrary number of strings. You must pass NULL as the last argument of this function, to terminate the list of strings. */ extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; /* Concatenate an arbitrary number of strings into a SUPPLIED area of memory. You must pass NULL as the last argument of this function, to terminate the list of strings. The supplied memory is assumed to be large enough. */ extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL; /* Concatenate an arbitrary number of strings into a GLOBAL area of memory. You must pass NULL as the last argument of this function, to terminate the list of strings. The supplied memory is assumed to be large enough. */ extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL; /* This is the global area used by concat_copy2. */ extern char *libiberty_concat_ptr; /* Concatenate an arbitrary number of strings. You must pass NULL as the last argument of this function, to terminate the list of strings. Allocates memory using alloca. The arguments are evaluated twice! */ #define ACONCAT(ACONCAT_PARAMS) \ (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \ concat_copy2 ACONCAT_PARAMS) /* Check whether two file descriptors refer to the same file. */ extern int fdmatch (int fd1, int fd2); /* Return the position of the first bit set in the argument. */ /* Prototypes vary from system to system, so we only provide a prototype on systems where we know that we need it. */ #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS extern int ffs(int); #endif /* Get the working directory. The result is cached, so don't call chdir() between calls to getpwd(). */ extern char * getpwd (void); /* Get the current time. */ /* Prototypes vary from system to system, so we only provide a prototype on systems where we know that we need it. */ #ifdef __MINGW32__ /* Forward declaration to avoid #include <sys/time.h>. */ struct timeval; extern int gettimeofday (struct timeval *, void *); #endif /* Get the amount of time the process has run, in microseconds. */ extern long get_run_time (void); /* Generate a relocated path to some installation directory. Allocates return value using malloc. */ extern char *make_relative_prefix (const char *, const char *, const char *) ATTRIBUTE_MALLOC; /* Generate a relocated path to some installation directory without attempting to follow any soft links. Allocates return value using malloc. */ extern char *make_relative_prefix_ignore_links (const char *, const char *, const char *) ATTRIBUTE_MALLOC; /* Choose a temporary directory to use for scratch files. */ extern char *choose_temp_base (void) ATTRIBUTE_MALLOC; /* Return a temporary file name or NULL if unable to create one. */ extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; /* Remove a link to a file unless it is special. */ extern int unlink_if_ordinary (const char *); /* Allocate memory filled with spaces. Allocates using malloc. */ extern const char *spaces (int count); /* Return the maximum error number for which strerror will return a string. */ extern int errno_max (void); /* Return the name of an errno value (e.g., strerrno (EINVAL) returns "EINVAL"). */ extern const char *strerrno (int); /* Given the name of an errno value, return the value. */ extern int strtoerrno (const char *); /* ANSI's strerror(), but more robust. */ extern char *xstrerror (int); /* Return the maximum signal number for which strsignal will return a string. */ extern int signo_max (void); /* Return a signal message string for a signal number (e.g., strsignal (SIGHUP) returns something like "Hangup"). */ /* This is commented out as it can conflict with one in system headers. We still document its existence though. */ /*extern const char *strsignal (int);*/ /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns "SIGHUP"). */ extern const char *strsigno (int); /* Given the name of a signal, return its number. */ extern int strtosigno (const char *); /* Register a function to be run by xexit. Returns 0 on success. */ extern int xatexit (void (*fn) (void)); /* Exit, calling all the functions registered with xatexit. */ extern void xexit (int status) ATTRIBUTE_NORETURN; /* Set the program name used by xmalloc. */ extern void xmalloc_set_program_name (const char *); /* Report an allocation failure. */ extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; /* Allocate memory without fail. If malloc fails, this will print a message to stderr (using the name set by xmalloc_set_program_name, if any) and then call xexit. */ extern void *xmalloc (size_t) ATTRIBUTE_MALLOC; /* Reallocate memory without fail. This works like xmalloc. Note, realloc type functions are not suitable for attribute malloc since they may return the same address across multiple calls. */ extern void *xrealloc (void *, size_t); /* Allocate memory without fail and set it to zero. This works like xmalloc. */ extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC; /* Copy a string into a memory buffer without fail. */ extern char *xstrdup (const char *) ATTRIBUTE_MALLOC; /* Copy at most N characters from string into a buffer without fail. */ extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC; /* Copy an existing memory buffer to a new memory buffer without fail. */ extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC; /* Physical memory routines. Return values are in BYTES. */ extern double physmem_total (void); extern double physmem_available (void); /* These macros provide a K&R/C89/C++-friendly way of allocating structures with nice encapsulation. The XDELETE*() macros are technically superfluous, but provided here for symmetry. Using them consistently makes it easier to update client code to use different allocators such as new/delete and new[]/delete[]. */ /* Scalar allocators. */ #define XALLOCA(T) ((T *) alloca (sizeof (T))) #define XNEW(T) ((T *) xmalloc (sizeof (T))) #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T))) #define XDELETE(P) free ((void*) (P)) /* Array allocators. */ #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N))) #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N))) #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) #define XDELETEVEC(P) free ((void*) (P)) /* Allocators for variable-sized structures and raw buffers. */ #define XALLOCAVAR(T, S) ((T *) alloca ((S))) #define XNEWVAR(T, S) ((T *) xmalloc ((S))) #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2))) #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) /* Type-safe obstack allocator. */ #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N))) #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S))) #define XOBFINISH(O, T) ((T) obstack_finish ((O))) /* hex character manipulation routines */ #define _hex_array_size 256 #define _hex_bad 99 extern const unsigned char _hex_value[_hex_array_size]; extern void hex_init (void); #define hex_p(c) (hex_value (c) != _hex_bad) /* If you change this, note well: Some code relies on side effects in the argument being performed exactly once. */ #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) /* Flags for pex_init. These are bits to be or'ed together. */ /* Record subprocess times, if possible. */ #define PEX_RECORD_TIMES 0x1 /* Use pipes for communication between processes, if possible. */ #define PEX_USE_PIPES 0x2 /* Save files used for communication between processes. */ #define PEX_SAVE_TEMPS 0x4 /* Prepare to execute one or more programs, with standard output of each program fed to standard input of the next. FLAGS As above. PNAME The name of the program to report in error messages. TEMPBASE A base name to use for temporary files; may be NULL to use a random name. Returns NULL on error. */ extern struct pex_obj *pex_init (int flags, const char *pname, const char *tempbase); /* Flags for pex_run. These are bits to be or'ed together. */ /* Last program in pipeline. Standard output of program goes to OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do not set this if you want to call pex_read_output. After this is set, pex_run may no longer be called with the same struct pex_obj. */ #define PEX_LAST 0x1 /* Search for program in executable search path. */ #define PEX_SEARCH 0x2 /* OUTNAME is a suffix. */ #define PEX_SUFFIX 0x4 /* Send program's standard error to standard output. */ #define PEX_STDERR_TO_STDOUT 0x8 /* Input file should be opened in binary mode. This flag is ignored on Unix. */ #define PEX_BINARY_INPUT 0x10 /* Output file should be opened in binary mode. This flag is ignored on Unix. For proper behaviour PEX_BINARY_INPUT and PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using PEX_BINARY_OUTPUT should be followed by a call using PEX_BINARY_INPUT. */ #define PEX_BINARY_OUTPUT 0x20 /* Capture stderr to a pipe. The output can be read by calling pex_read_err and reading from the returned FILE object. This flag may be specified only for the last program in a pipeline. This flag is supported only on Unix and Windows. */ #define PEX_STDERR_TO_PIPE 0x40 /* Capture stderr in binary mode. This flag is ignored on Unix. */ #define PEX_BINARY_ERROR 0x80 /* Execute one program. Returns NULL on success. On error returns an error string (typically just the name of a system call); the error string is statically allocated. OBJ Returned by pex_init. FLAGS As above. EXECUTABLE The program to execute. ARGV NULL terminated array of arguments to pass to the program. OUTNAME Sets the output file name as follows: PEX_SUFFIX set (OUTNAME may not be NULL): TEMPBASE parameter to pex_init not NULL: Output file name is the concatenation of TEMPBASE and OUTNAME. TEMPBASE is NULL: Output file name is a random file name ending in OUTNAME. PEX_SUFFIX not set: OUTNAME not NULL: Output file name is OUTNAME. OUTNAME NULL, TEMPBASE not NULL: Output file name is randomly chosen using TEMPBASE. OUTNAME NULL, TEMPBASE NULL: Output file name is randomly chosen. If PEX_LAST is not set, the output file name is the name to use for a temporary file holding stdout, if any (there will not be a file if PEX_USE_PIPES is set and the system supports pipes). If a file is used, it will be removed when no longer needed unless PEX_SAVE_TEMPS is set. If PEX_LAST is set, and OUTNAME is not NULL, standard output is written to the output file name. The file will not be removed. If PEX_LAST and PEX_SUFFIX are both set, TEMPBASE may not be NULL. ERRNAME If not NULL, this is the name of a file to which standard error is written. If NULL, standard error of the program is standard error of the caller. ERR On an error return, *ERR is set to an errno value, or to 0 if there is no relevant errno. */ extern const char *pex_run (struct pex_obj *obj, int flags, const char *executable, char * const *argv, const char *outname, const char *errname, int *err); /* As for pex_run (), but takes an extra parameter to enable the environment for the child process to be specified. ENV The environment for the child process, specified as an array of character pointers. Each element of the array should point to a string of the form VAR=VALUE, with the exception of the last element which must be a null pointer. */ extern const char *pex_run_in_environment (struct pex_obj *obj, int flags, const char *executable, char * const *argv, char * const *env, const char *outname, const char *errname, int *err); /* Return a stream for a temporary file to pass to the first program in the pipeline as input. The file name is chosen as for pex_run. pex_run closes the file automatically; don't close it yourself. */ extern FILE *pex_input_file (struct pex_obj *obj, int flags, const char *in_name); /* Return a stream for a pipe connected to the standard input of the first program in the pipeline. You must have passed `PEX_USE_PIPES' to `pex_init'. Close the returned stream yourself. */ extern FILE *pex_input_pipe (struct pex_obj *obj, int binary); /* Read the standard output of the last program to be executed. pex_run can not be called after this. BINARY should be non-zero if the file should be opened in binary mode; this is ignored on Unix. Returns NULL on error. Don't call fclose on the returned FILE; it will be closed by pex_free. */ extern FILE *pex_read_output (struct pex_obj *, int binary); /* Read the standard error of the last program to be executed. pex_run can not be called after this. BINARY should be non-zero if the file should be opened in binary mode; this is ignored on Unix. Returns NULL on error. Don't call fclose on the returned FILE; it will be closed by pex_free. */ extern FILE *pex_read_err (struct pex_obj *, int binary); /* Return exit status of all programs in VECTOR. COUNT indicates the size of VECTOR. The status codes in the vector are in the order of the calls to pex_run. Returns 0 on error, 1 on success. */ extern int pex_get_status (struct pex_obj *, int count, int *vector); /* Return times of all programs in VECTOR. COUNT indicates the size of VECTOR. struct pex_time is really just struct timeval, but that is not portable to all systems. Returns 0 on error, 1 on success. */ struct pex_time { unsigned long user_seconds; unsigned long user_microseconds; unsigned long system_seconds; unsigned long system_microseconds; }; extern int pex_get_times (struct pex_obj *, int count, struct pex_time *vector); /* Clean up a pex_obj. If you have not called pex_get_times or pex_get_status, this will try to kill the subprocesses. */ extern void pex_free (struct pex_obj *); /* Just execute one program. Return value is as for pex_run. FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. EXECUTABLE As for pex_run. ARGV As for pex_run. PNAME As for pex_init. OUTNAME As for pex_run when PEX_LAST is set. ERRNAME As for pex_run. STATUS Set to exit status on success. ERR As for pex_run. */ extern const char *pex_one (int flags, const char *executable, char * const *argv, const char *pname, const char *outname, const char *errname, int *status, int *err); /* pexecute and pwait are the old pexecute interface, still here for backward compatibility. Don't use these for new code. Instead, use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ /* Definitions used by the pexecute routine. */ #define PEXECUTE_FIRST 1 #define PEXECUTE_LAST 2 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) #define PEXECUTE_SEARCH 4 #define PEXECUTE_VERBOSE 8 /* Execute a program. */ extern int pexecute (const char *, char * const *, const char *, const char *, char **, char **, int); /* Wait for pexecute to finish. */ extern int pwait (int, int *, int); #if !HAVE_DECL_ASPRINTF /* Like sprintf but provides a pointer to malloc'd storage, which must be freed by the caller. */ extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; #endif #if !HAVE_DECL_VASPRINTF /* Like vsprintf but provides a pointer to malloc'd storage, which must be freed by the caller. */ extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0); #endif #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF /* Like sprintf but prints at most N characters. */ extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; #endif #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF /* Like vsprintf but prints at most N characters. */ extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0); #endif #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP /* Compare version strings. */ extern int strverscmp (const char *, const char *); #endif #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) /* Drastically simplified alloca configurator. If we're using GCC, we use __builtin_alloca; otherwise we use the C alloca. The C alloca is always available. You can override GCC by defining USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is also set/unset as it is often used to indicate whether code needs to call alloca(0). */ extern void *C_alloca (size_t) ATTRIBUTE_MALLOC; #undef alloca #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA # define alloca(x) __builtin_alloca(x) # undef C_ALLOCA # define ASTRDUP(X) \ (__extension__ ({ const char *const libiberty_optr = (X); \ const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ char *const libiberty_nptr = (char *const) alloca (libiberty_len); \ (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) #else # define alloca(x) C_alloca(x) # undef USE_C_ALLOCA # define USE_C_ALLOCA 1 # undef C_ALLOCA # define C_ALLOCA 1 extern const char *libiberty_optr; extern char *libiberty_nptr; extern unsigned long libiberty_len; # define ASTRDUP(X) \ (libiberty_optr = (X), \ libiberty_len = strlen (libiberty_optr) + 1, \ libiberty_nptr = (char *) alloca (libiberty_len), \ (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) #endif #ifdef __cplusplus } #endif #endif /* ! defined (LIBIBERTY_H) */ 
