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Copyright (c) 2004 The Regents of the University of Michigan.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the University nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* support/nfs/cacheio.c
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* support IO on the cache channel files in 2.5 and beyond.
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* These use 'qwords' which are like words, but with a little quoting.
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* Support routines for text-based upcalls.
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* Fields are separated by spaces.
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* Fields are either mangled to quote space tab newline slosh with slosh
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* or a hexified with a leading \x
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* Record is terminated with newline.
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#include <sys/types.h>
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void qword_add(char **bpp, int *lp, char *str)
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while ((c=*str++) && len)
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*bp++ = '0' + ((c & 0300)>>6);
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*bp++ = '0' + ((c & 0070)>>3);
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*bp++ = '0' + ((c & 0007)>>0);
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if (c || len <1) len = -1;
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void qword_addhex(char **bpp, int *lp, char *buf, int blen)
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while (blen && len >= 2) {
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unsigned char c = *buf++;
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*bp++ = '0' + ((c&0xf0)>>4) + (c>=0xa0)*('a'-'9'-1);
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*bp++ = '0' + (c&0x0f) + ((c&0x0f)>=0x0a)*('a'-'9'-1);
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if (blen || len<1) len = -1;
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void qword_addint(char **bpp, int *lp, int n)
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len = snprintf(*bpp, *lp, "%d ", n);
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void qword_addeol(char **bpp, int *lp)
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static char qword_buf[8192];
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static char tmp_buf[8192];
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void qword_print(FILE *f, char *str)
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char *bp = qword_buf;
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int len = sizeof(qword_buf);
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qword_add(&bp, &len, str);
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fwrite(qword_buf, bp-qword_buf, 1, f);
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memcpy(tmp_buf, qword_buf, bp-qword_buf);
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tmp_buf[bp-qword_buf] = '\0';
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printerr(2, "%s", tmp_buf);
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void qword_printhex(FILE *f, char *str, int slen)
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char *bp = qword_buf;
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int len = sizeof(qword_buf);
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qword_addhex(&bp, &len, str, slen);
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fwrite(qword_buf, bp-qword_buf, 1, f);
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memcpy(tmp_buf, qword_buf, bp-qword_buf);
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tmp_buf[bp-qword_buf] = '\0';
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printerr(2, "%s", tmp_buf);
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void qword_printint(FILE *f, int num)
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fprintf(f, "%d ", num);
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printerr(2, "%d ", num);
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void qword_eol(FILE *f)
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#define isodigit(c) (isdigit(c) && c <= '7')
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int qword_get(char **bpp, char *dest, int bufsize)
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/* return bytes copied, or -1 on error */
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while (*bp == ' ') bp++;
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if (bp[0] == '\\' && bp[1] == 'x') {
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while (isxdigit(bp[0]) && isxdigit(bp[1]) && len < bufsize) {
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int byte = isdigit(*bp) ? *bp-'0' : toupper(*bp)-'A'+10;
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byte |= isdigit(*bp) ? *bp-'0' : toupper(*bp)-'A'+10;
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/* text with \nnn octal quoting */
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while (*bp != ' ' && *bp != '\n' && *bp && len < bufsize-1) {
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isodigit(bp[1]) && (bp[1] <= '3') &&
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int byte = (*++bp -'0');
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byte = (byte << 3) | (*bp++ - '0');
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byte = (byte << 3) | (*bp++ - '0');
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if (*bp != ' ' && *bp != '\n' && *bp != '\0')
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while (*bp == ' ') bp++;
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int qword_get_int(char **bpp, int *anint)
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int len = qword_get(bpp, buf, 50);
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if (len < 0) return -1;
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if (len ==0) return -1;
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rv = strtol(buf, &ep, 0);
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int readline(int fd, char **buf, int *lenp)
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/* read a line into *buf, which is malloced *len long
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* realloc if needed until we find a \n
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* nul out the \n and return
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* 0 of eof, 1 of success
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char *b = malloc(128);
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len = read(fd, *buf, *lenp);
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printerr(2, "read error in readline: %d\n", len);
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while ((*buf)[len-1] != '\n') {
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/* now the less common case. There was no newline,
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* so we have to keep reading after re-alloc
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new = realloc(*buf, *lenp);
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nl = read(fd, *buf +len, *lenp - len);
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printerr(2, "read error in readline: %d\n", nl);
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printerr(1, "read line with %d characters:\n%s\n", *lenp, *buf);
added
removed
utils/svcgssd/cacheio.c
