69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
#include "pwf.h"
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#include <pthread.h>
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static unsigned atou(char **s)
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{
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unsigned x;
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for (x=0; **s-'0'<10U; ++*s) x=10*x+(**s-'0');
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return x;
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}
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int __getgrent_a(FILE *f, struct group *gr, char **line, size_t *size, char ***mem, size_t *nmem, struct group **res)
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{
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ssize_t l;
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char *s, *mems;
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size_t i;
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int rv = 0;
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int cs;
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pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
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for (;;) {
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if ((l=getline(line, size, f)) < 0) {
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rv = ferror(f) ? errno : 0;
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free(*line);
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*line = 0;
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gr = 0;
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goto end;
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}
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line[0][l-1] = 0;
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s = line[0];
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gr->gr_name = s++;
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if (!(s = strchr(s, ':'))) continue;
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*s++ = 0; gr->gr_passwd = s;
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if (!(s = strchr(s, ':'))) continue;
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*s++ = 0; gr->gr_gid = atou(&s);
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if (*s != ':') continue;
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*s++ = 0; mems = s;
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break;
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}
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for (*nmem=!!*s; *s; s++)
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if (*s==',') ++*nmem;
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free(*mem);
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*mem = calloc(sizeof(char *), *nmem+1);
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if (!*mem) {
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rv = errno;
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free(*line);
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*line = 0;
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gr = 0;
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goto end;
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}
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if (*mems) {
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mem[0][0] = mems;
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for (s=mems, i=0; *s; s++)
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if (*s==',') *s++ = 0, mem[0][++i] = s;
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mem[0][++i] = 0;
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} else {
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mem[0][0] = 0;
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}
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gr->gr_mem = *mem;
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end:
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pthread_setcancelstate(cs, 0);
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*res = gr;
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if(rv) errno = rv;
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return rv;
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}
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