1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/*
* Shell-like utility functions
*
* Copyright 2004, Broadcom Corporation
* All Rights Reserved.
*
* THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
* KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
* SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
*
*/
#ifndef _shutils_h_
#define _shutils_h_
#include <string.h>
/*
* Reads file and returns contents
* @param fd file descriptor
* @return contents of file or NULL if an error occurred
*/
extern char * fd2str(int fd);
/*
* Reads file and returns contents
* @param path path to file
* @return contents of file or NULL if an error occurred
*/
extern char * file2str(const char *path);
/*
* Waits for a file descriptor to become available for reading or unblocked signal
* @param fd file descriptor
* @param timeout seconds to wait before timing out or 0 for no timeout
* @return 1 if descriptor changed status or 0 if timed out or -1 on error
*/
extern int waitfor(int fd, int timeout);
/*
* Concatenates NULL-terminated list of arguments into a single
* commmand and executes it
* @param argv argument list
* @param path NULL, ">output", or ">>output"
* @param timeout seconds to wait before timing out or 0 for no timeout
* @param ppid NULL to wait for child termination or pointer to pid
* @return return value of executed command or errno
*/
extern int _eval(char *const argv[], char *path, int timeout, pid_t *ppid);
/*
* Concatenates NULL-terminated list of arguments into a single
* commmand and executes it
* @param argv argument list
* @return stdout of executed command or NULL if an error occurred
*/
extern char * _backtick(char *const argv[]);
/*
* Kills process whose PID is stored in plaintext in pidfile
* @param pidfile PID file
* @return 0 on success and errno on failure
*/
extern int kill_pidfile(char *pidfile);
/*
* fread() with automatic retry on syscall interrupt
* @param ptr location to store to
* @param size size of each element of data
* @param nmemb number of elements
* @param stream file stream
* @return number of items successfully read
*/
extern int safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream);
/*
* fwrite() with automatic retry on syscall interrupt
* @param ptr location to read from
* @param size size of each element of data
* @param nmemb number of elements
* @param stream file stream
* @return number of items successfully written
*/
extern int safe_fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
/*
* Convert Ethernet address string representation to binary data
* @param a string in xx:xx:xx:xx:xx:xx notation
* @param e binary data
* @return TRUE if conversion was successful and FALSE otherwise
*/
extern int ether_atoe(const char *a, unsigned char *e);
/*
* Convert Ethernet address binary data to string representation
* @param e binary data
* @param a string in xx:xx:xx:xx:xx:xx notation
* @return a
*/
extern char * ether_etoa(const unsigned char *e, char *a);
/*
* Concatenate two strings together into a caller supplied buffer
* @param s1 first string
* @param s2 second string
* @param buf buffer large enough to hold both strings
* @return buf
*/
static inline char * strcat_r(const char *s1, const char *s2, char *buf)
{
strcpy(buf, s1);
strcat(buf, s2);
return buf;
}
/* Check for a blank character; that is, a space or a tab */
#define isblank(c) ((c) == ' ' || (c) == '\t')
/* Strip trailing CR/NL from string <s> */
#define chomp(s) ({ \
char *c = (s) + strlen((s)) - 1; \
while ((c > (s)) && (*c == '\n' || *c == '\r' || *c == ' ')) \
*c-- = '\0'; \
s; \
})
/* Simple version of _backtick() */
#define backtick(cmd, args...) ({ \
char *argv[] = { cmd, ## args, NULL }; \
_backtick(argv); \
})
/* Simple version of _eval() (no timeout and wait for child termination) */
#define eval(cmd, args...) ({ \
char *argv[] = { cmd, ## args, NULL }; \
_eval(argv, ">/dev/console", 0, NULL); \
})
/* Copy each token in wordlist delimited by space into word */
#define foreach(word, wordlist, next) \
for (next = &wordlist[strspn(wordlist, " ")], \
strncpy(word, next, sizeof(word)), \
word[strcspn(word, " ")] = '\0', \
word[sizeof(word) - 1] = '\0', \
next = strchr(next, ' '); \
strlen(word); \
next = next ? &next[strspn(next, " ")] : "", \
strncpy(word, next, sizeof(word)), \
word[strcspn(word, " ")] = '\0', \
word[sizeof(word) - 1] = '\0', \
next = strchr(next, ' '))
/* Return NUL instead of NULL if undefined */
#define safe_getenv(s) (getenv(s) ? : "")
/* Print directly to the console */
#define cprintf(fmt, args...) do { \
FILE *fp = fopen("/dev/console", "w"); \
if (fp) { \
fprintf(fp, fmt, ## args); \
fclose(fp); \
} \
} while (0)
/* Debug print */
#ifdef DEBUG
#define dprintf(fmt, args...) cprintf("%s: " fmt, __FUNCTION__, ## args)
#else
#define dprintf(fmt, args...)
#endif
#ifdef vxworks
#include <inetLib.h>
#define inet_aton(a, n) ((inet_aton((a), (n)) == ERROR) ? 0 : 1)
#define inet_ntoa(n) ({ char a[INET_ADDR_LEN]; inet_ntoa_b ((n), a); a; })
#include <typedefs.h>
#include <bcmutils.h>
#define ether_atoe(a, e) bcm_ether_atoe((a), (e))
#define ether_etoa(e, a) bcm_ether_ntoa((e), (a))
/* These declarations are not available where you would expect them */
extern int vsnprintf (char *, size_t, const char *, va_list);
extern int snprintf(char *str, size_t count, const char *fmt, ...);
extern char *strdup(const char *);
extern char *strsep(char **stringp, char *delim);
extern int strcasecmp(const char *s1, const char *s2);
extern int strncasecmp(const char *s1, const char *s2, size_t n);
/* Neither are socket() and connect() */
#include <sockLib.h>
#ifdef DEBUG
#undef dprintf
#define dprintf printf
#endif
#endif
#endif /* _shutils_h_ */
|
