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git.proxmox.com Git - mirror_smartmontools-debian.git/blob - utility.h
4 * Home page of code is: http://www.smartmontools.org
6 * Copyright (C) 2002-11 Bruce Allen
7 * Copyright (C) 2008-15 Christian Franke
8 * Copyright (C) 2000 Michael Cornwell <cornwell@acm.org>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2, or (at your option)
15 * You should have received a copy of the GNU General Public License
16 * (for example COPYING); If not, see <http://www.gnu.org/licenses/>.
18 * This code was originally developed as a Senior Thesis by Michael Cornwell
19 * at the Concurrent Systems Laboratory (now part of the Storage Systems
20 * Research Center), Jack Baskin School of Engineering, University of
21 * California, Santa Cruz. http://ssrc.soe.ucsc.edu/
28 #define UTILITY_H_CVSID "$Id: utility.h 4145 2015-10-17 12:01:38Z chrfranke $"
31 #include <sys/types.h> // for regex.h (according to POSIX)
39 #define __attribute_format_printf(x, y) /**/
40 #elif defined(__MINGW32__) && __USE_MINGW_ANSI_STDIO
41 // Check format of __mingw_*printf() instead of MSVCRT.DLL:*printf()
42 #define __attribute_format_printf(x, y) __attribute__((format (gnu_printf, x, y)))
43 #define HAVE_WORKING_SNPRINTF 1
45 #define __attribute_format_printf(x, y) __attribute__((format (printf, x, y)))
48 // Make version information string
49 std::string
format_version_info(const char * prog_name
, bool full
= false);
51 // return (v)sprintf() formated std::string
52 std::string
strprintf(const char * fmt
, ...)
53 __attribute_format_printf(1, 2);
54 std::string
vstrprintf(const char * fmt
, va_list ap
);
56 // Return true if STR starts with PREFIX
57 inline bool str_starts_with(const char * str
, const char * prefix
)
58 { return !strncmp(str
, prefix
, strlen(prefix
)); }
60 inline bool str_starts_with(const std::string
& str
, const char * prefix
)
61 { return !strncmp(str
.c_str(), prefix
, strlen(prefix
)); }
63 #ifndef HAVE_WORKING_SNPRINTF
64 // Substitute by safe replacement functions
65 int safe_snprintf(char *buf
, int size
, const char *fmt
, ...)
66 __attribute_format_printf(3, 4);
67 int safe_vsnprintf(char *buf
, int size
, const char *fmt
, va_list ap
);
68 #define snprintf safe_snprintf
69 #define vsnprintf safe_vsnprintf
73 // Replacement for missing strtoull() (Linux with libc < 6, MSVC)
74 uint64_t strtoull(const char * p
, char * * endp
, int base
);
77 // Utility function prints current date and time and timezone into a
78 // character buffer of length>=64. All the fuss is needed to get the
79 // right timezone info (sigh).
80 #define DATEANDEPOCHLEN 64
81 void dateandtimezone(char *buffer
);
82 // Same, but for time defined by epoch tval
83 void dateandtimezoneepoch(char *buffer
, time_t tval
);
85 // like printf() except that we can control it better. Note --
86 // although the prototype is given here in utility.h, the function
87 // itself is defined differently in smartctl and smartd. So the
88 // function definition(s) are in smartd.c and in smartctl.c.
89 void pout(const char *fmt
, ...)
90 __attribute_format_printf(1, 2);
92 // replacement for perror() with redirected output.
93 void syserror(const char *message
);
95 // Function for processing -r option in smartctl and smartd
96 int split_report_arg(char *s
, int *i
);
98 // Function for processing -t selective... option in smartctl
99 int split_selective_arg(char *s
, uint64_t *start
, uint64_t *stop
, int *mode
);
101 // Replacement for exit(status)
102 // (exit is not compatible with C++ destructors)
103 #define EXIT(status) { throw (int)(status); }
108 // Utility function to free memory
109 void *FreeNonZero(void* address
, int size
, int whatline
, const char* file
);
111 // A custom version of strdup() that keeps track of how much memory is
112 // being allocated. If mustexist is set, it also throws an error if we
113 // try to duplicate a NULL string.
114 char *CustomStrDup(const char *ptr
, int mustexist
, int whatline
, const char* file
);
116 #endif // OLD_INTERFACE
118 // Compile time check of byte ordering
119 // (inline const function allows compiler to remove dead code)
120 inline bool isbigendian()
122 #ifdef WORDS_BIGENDIAN
129 // Runtime check of ./configure result, throws on error.
132 // This value follows the peripheral device type value as defined in
133 // SCSI Primary Commands, ANSI INCITS 301:1997. It is also used in
134 // the ATA standard for packet devices to define the device type.
135 const char *packetdevicetype(int type
);
137 // returns true if any of the n bytes are nonzero, else zero.
138 bool nonempty(const void * data
, int size
);
140 // needed to fix glibc bug
141 void FixGlibcTimeZoneBug();
143 // Format integer with thousands separator
144 const char * format_with_thousands_sep(char * str
, int strsize
, uint64_t val
,
145 const char * thousands_sep
= 0);
147 // Format capacity with SI prefixes
148 const char * format_capacity(char * str
, int strsize
, uint64_t val
,
149 const char * decimal_point
= 0);
151 // Wrapper class for a raw data buffer
155 explicit raw_buffer(unsigned sz
, unsigned char val
= 0)
156 : m_data(new unsigned char[sz
]),
158 { memset(m_data
, val
, m_size
); }
161 { delete [] m_data
; }
163 unsigned size() const
166 unsigned char * data()
168 const unsigned char * data() const
172 unsigned char * m_data
;
175 raw_buffer(const raw_buffer
&);
176 void operator=(const raw_buffer
&);
179 /// Wrapper class for FILE *.
183 explicit stdio_file(FILE * f
= 0, bool owner
= false)
184 : m_file(f
), m_owner(owner
) { }
186 stdio_file(const char * name
, const char * mode
)
187 : m_file(fopen(name
, mode
)), m_owner(true) { }
191 if (m_file
&& m_owner
)
195 bool open(const char * name
, const char * mode
)
197 if (m_file
&& m_owner
)
199 m_file
= fopen(name
, mode
);
204 void open(FILE * f
, bool owner
= false)
206 if (m_file
&& m_owner
)
216 bool ok
= !ferror(m_file
);
226 bool operator!() const
233 stdio_file(const stdio_file
&);
234 void operator=(const stdio_file
&);
237 /// Wrapper class for regex(3).
238 /// Supports copy & assignment and is compatible with STL containers.
239 class regular_expression
242 // Construction & assignment
243 regular_expression();
245 regular_expression(const char * pattern
, int flags
,
246 bool throw_on_error
= true);
248 ~regular_expression();
250 regular_expression(const regular_expression
& x
);
252 regular_expression
& operator=(const regular_expression
& x
);
254 /// Set and compile new pattern, return false on error.
255 bool compile(const char * pattern
, int flags
);
257 // Get pattern from last compile().
258 const char * get_pattern() const
259 { return m_pattern
.c_str(); }
261 /// Get error message from last compile().
262 const char * get_errmsg() const
263 { return m_errmsg
.c_str(); }
265 // Return true if pattern is not set or bad.
267 { return (m_pattern
.empty() || !m_errmsg
.empty()); }
269 /// Return true if substring matches pattern
270 bool match(const char * str
, int flags
= 0) const
271 { return !regexec(&m_regex_buf
, str
, 0, (regmatch_t
*)0, flags
); }
273 /// Return true if full string matches pattern
274 bool full_match(const char * str
, int flags
= 0) const
277 return ( !regexec(&m_regex_buf
, str
, 1, &range
, flags
)
278 && range
.rm_so
== 0 && range
.rm_eo
== (int)strlen(str
));
281 /// Return true if substring matches pattern, fill regmatch_t array.
282 bool execute(const char * str
, unsigned nmatch
, regmatch_t
* pmatch
, int flags
= 0) const
283 { return !regexec(&m_regex_buf
, str
, nmatch
, pmatch
, flags
); }
286 std::string m_pattern
;
289 std::string m_errmsg
;
292 void copy(const regular_expression
& x
);
298 //(implemented in os_win32.cpp)
299 std::string
get_exe_dir();
304 // remaining controller types in old interface modules
305 #define CONTROLLER_UNKNOWN 0x00
306 #define CONTROLLER_ATA 0x01
307 #define CONTROLLER_SCSI 0x02