Annotation of embedaddon/libpdel/util/kernelglue.c, revision 1.1.1.1
1.1 misho 1:
2: /*
3: * Copyright (c) 1988, 1993
4: * The Regents of the University of California. All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: * 1. Redistributions of source code must retain the above copyright
10: * notice, this list of conditions and the following disclaimer.
11: * 2. Redistributions in binary form must reproduce the above copyright
12: * notice, this list of conditions and the following disclaimer in the
13: * documentation and/or other materials provided with the distribution.
14: * 3. All advertising materials mentioning features or use of this software
15: * must display the following acknowledgement:
16: * This product includes software developed by the University of
17: * California, Berkeley and its contributors.
18: * 4. Neither the name of the University nor the names of its contributors
19: * may be used to endorse or promote products derived from this software
20: * without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: */
34:
35: #include <sys/types.h>
36: #include <sys/errno.h>
37: #include <sys/param.h>
38: #include <sys/libkern.h>
39: #include <sys/systm.h>
40: #include <sys/ctype.h>
41: #include <net/ethernet.h>
42: #include <netinet/in.h>
43: #include <netinet/in_systm.h>
44:
45: #include "kernelglue.h"
46:
47: /*
48: * Kernelglue kernel memory type
49: */
50: MALLOC_DEFINE(M_LIBPDEL, "LIBPDEL", "libpdel kernel memory");
51:
52: /* Errno */
53: int errno;
54:
55: char *
56: strdup(const char *str)
57: {
58: size_t len;
59: char *copy;
60:
61: len = strlen(str) + 1;
62: if ((copy = MALLOC(NULL, len)) == NULL)
63: return (NULL);
64: memcpy(copy, str, len);
65: return (copy);
66: }
67:
68: int
69: asprintf(char **ret, const char *format, ...)
70: {
71: va_list args;
72: int rtn;
73:
74: va_start(args, format);
75: rtn = vasprintf(ret, format, args);
76: va_end(args);
77: return (rtn);
78: }
79:
80: int
81: vasprintf(char **ret, const char *format, va_list ap)
82: {
83: size_t buflen = 256;
84: char *buf;
85: int slen;
86:
87: /* Initialize return value in case of failure */
88: *ret = NULL;
89:
90: try_again:
91: /* Allocate buffer */
92: if ((buf = malloc(buflen, M_LIBPDEL, M_NOWAIT)) == NULL) {
93: errno = ENOMEM;
94: return (-1);
95: }
96:
97: /* Format string */
98: slen = vsnprintf(buf, buflen, format, ap);
99:
100: /* If buffer was big enough, we're done */
101: if (slen < buflen) {
102: *ret = buf;
103: return (slen);
104: }
105:
106: /* Increase buffer size and try again */
107: free(buf, M_LIBPDEL);
108: buflen = slen + 1;
109: goto try_again;
110: }
111:
112: char *
113: strchr(const char *s, int c)
114: {
115: while (1) {
116: if (*s == (char)c)
117: return ((char *)s);
118: if (*s == '\0')
119: return (NULL);
120: s++;
121: }
122: }
123:
124: int
125: strcasecmp(const char *s1, const char *s2)
126: {
127: const u_char *s = s1;
128: const u_char *t = s2;
129:
130: while (*s != '\0' && *t != '\0' && tolower(*s) == tolower(*t)) {
131: s++;
132: t++;
133: }
134: return (*s - *t);
135: }
136:
137: size_t
138: strlcpy(char *dst, const char *src, size_t siz)
139: {
140: char *d = dst;
141: const char *s = src;
142: size_t n = siz;
143:
144: /* Copy as many bytes as will fit */
145: if (n != 0 && --n != 0) {
146: do {
147: if ((*d++ = *s++) == 0)
148: break;
149: } while (--n != 0);
150: }
151:
152: /* Not enough room in dst, add NUL and traverse rest of src */
153: if (n == 0) {
154: if (siz != 0)
155: *d = '\0'; /* NUL-terminate dst */
156: while (*s++)
157: ;
158: }
159:
160: return(s - src - 1); /* count does not include NUL */
161: }
162:
163: void *
164: memmove(void *dst, const void *src, size_t len)
165: {
166: ovbcopy(src, dst, len);
167: return (dst);
168: }
169:
170: time_t
171: time(time_t *newtime)
172: {
173: struct timeval valtime;
174:
175: getmicrotime(&valtime);
176: if (newtime)
177: *newtime = valtime.tv_sec;
178: return (valtime.tv_sec);
179: }
180:
181: char *
182: strerror(int errnum)
183: {
184: static char buf[32];
185: const char *s;
186:
187: switch (errnum) {
188: case EPERM: s = "Operation not permitted"; break;
189: case ENOENT: s = "No such file or directory"; break;
190: case ESRCH: s = "No such process"; break;
191: case EINTR: s = "Interrupted system call"; break;
192: case EIO: s = "Input/output error"; break;
193: case ENXIO: s = "Device not configured"; break;
194: case E2BIG: s = "Argument list too long"; break;
195: case ENOEXEC: s = "Exec format error"; break;
196: case EBADF: s = "Bad file descriptor"; break;
197: case ECHILD: s = "No child processes"; break;
198: case EDEADLK: s = "Resource deadlock avoided"; break;
199: case ENOMEM: s = "Cannot allocate memory"; break;
200: case EACCES: s = "Permission denied"; break;
201: case EFAULT: s = "Bad address"; break;
202: case ENOTBLK: s = "Block device required"; break;
203: case EBUSY: s = "Device busy"; break;
204: case EEXIST: s = "File exists"; break;
205: case EXDEV: s = "Cross-device link"; break;
206: case ENODEV: s = "Operation not supported by device"; break;
207: case ENOTDIR: s = "Not a directory"; break;
208: case EISDIR: s = "Is a directory"; break;
209: case EINVAL: s = "Invalid argument"; break;
210: case ENFILE: s = "Too many open files in system"; break;
211: case EMFILE: s = "Too many open files"; break;
212: case ENOTTY: s = "Inappropriate ioctl for device"; break;
213: case ETXTBSY: s = "Text file busy"; break;
214: case EFBIG: s = "File too large"; break;
215: case ENOSPC: s = "No space left on device"; break;
216: case ESPIPE: s = "Illegal seek"; break;
217: case EROFS: s = "Read-only file system"; break;
218: case EMLINK: s = "Too many links"; break;
219: case EPIPE: s = "Broken pipe"; break;
220: case EDOM: s = "Numerical argument out of domain"; break;
221: case ERANGE: s = "Result too large"; break;
222: case EAGAIN: s = "Resource temporarily unavailable"; break;
223: case EINPROGRESS: s = "Operation now in progress"; break;
224: case EALREADY: s = "Operation already in progress"; break;
225: case ENOTSOCK: s = "Socket operation on non-socket"; break;
226: case EDESTADDRREQ: s = "Destination address required"; break;
227: case EMSGSIZE: s = "Message too long"; break;
228: case EPROTOTYPE: s = "Protocol wrong type for socket"; break;
229: case ENOPROTOOPT: s = "Protocol not available"; break;
230: case EPROTONOSUPPORT: s = "Protocol not supported"; break;
231: case ESOCKTNOSUPPORT: s = "Socket type not supported"; break;
232: case EOPNOTSUPP: s = "Operation not supported"; break;
233: case EPFNOSUPPORT: s = "Protocol family not supported"; break;
234: case EAFNOSUPPORT:
235: s = "Address family not supported by protocol family"; break;
236: case EADDRINUSE: s = "Address already in use"; break;
237: case EADDRNOTAVAIL: s = "Can't assign requested address"; break;
238: case ENETDOWN: s = "Network is down"; break;
239: case ENETUNREACH: s = "Network is unreachable"; break;
240: case ENETRESET:
241: s = "Network dropped connection on reset"; break;
242: case ECONNABORTED: s = "Software caused connection abort"; break;
243: case ECONNRESET: s = "Connection reset by peer"; break;
244: case ENOBUFS: s = "No buffer space available"; break;
245: case EISCONN: s = "Socket is already connected"; break;
246: case ENOTCONN: s = "Socket is not connected"; break;
247: case ESHUTDOWN: s = "Can't send after socket shutdown"; break;
248: case ETOOMANYREFS: s = "Too many references: can't splice"; break;
249: case ETIMEDOUT: s = "Operation timed out"; break;
250: case ECONNREFUSED: s = "Connection refused"; break;
251: case ELOOP: s = "Too many levels of symbolic links"; break;
252: case ENAMETOOLONG: s = "File name too long"; break;
253: case EHOSTDOWN: s = "Host is down"; break;
254: case EHOSTUNREACH: s = "No route to host"; break;
255: case ENOTEMPTY: s = "Directory not empty"; break;
256: case EPROCLIM: s = "Too many processes"; break;
257: case EUSERS: s = "Too many users"; break;
258: case EDQUOT: s = "Disc quota exceeded"; break;
259: case ESTALE: s = "Stale NFS file handle"; break;
260: case EREMOTE: s = "Too many levels of remote in path"; break;
261: case EBADRPC: s = "RPC struct is bad"; break;
262: case ERPCMISMATCH: s = "RPC version wrong"; break;
263: case EPROGUNAVAIL: s = "RPC prog. not avail"; break;
264: case EPROGMISMATCH: s = "Program version wrong"; break;
265: case EPROCUNAVAIL: s = "Bad procedure for program"; break;
266: case ENOLCK: s = "No locks available"; break;
267: case ENOSYS: s = "Function not implemented"; break;
268: case EFTYPE: s = "Inappropriate file type or format"; break;
269: case EAUTH: s = "Authentication error"; break;
270: case ENEEDAUTH: s = "Need authenticator"; break;
271: case EIDRM: s = "Identifier removed"; break;
272: case ENOMSG: s = "No message of desired type"; break;
273: case EOVERFLOW: s =
274: "Value too large to be stored in data type"; break;
275: case ECANCELED: s = "Operation canceled"; break;
276: case EILSEQ: s = "Illegal byte sequence"; break;
277: default:
278: snprintf(buf, sizeof(buf), "Unknown error: %d", errnum);
279: errno = EINVAL;
280: return (buf);
281: }
282: strlcpy(buf, s, sizeof(buf));
283: return (buf);
284: }
285:
286: void *
287: kern_malloc(size_t size)
288: {
289: void *mem;
290:
291: if ((mem = malloc((u_long)size, M_LIBPDEL, M_NOWAIT)) == NULL)
292: errno = ENOMEM;
293: return (mem);
294: }
295:
296: void *
297: kern_realloc(void *mem, size_t size)
298: {
299: if ((mem = realloc(mem,
300: (u_long)size, M_LIBPDEL, M_NOWAIT)) == NULL)
301: errno = ENOMEM;
302: return (mem);
303: }
304:
305: void
306: kern_free(void *mem)
307: {
308: free(mem, M_LIBPDEL);
309: }
310:
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