[398] | 1 | #include "pwf.h"
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| 2 | #include <pthread.h>
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| 3 |
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| 4 | #define FIX(x) (gr->gr_##x = gr->gr_##x-line+buf)
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| 5 |
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| 6 | static int getgr_r(const char *name, gid_t gid, struct group *gr, char *buf, size_t size, struct group **res)
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| 7 | {
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| 8 | char *line = 0;
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| 9 | size_t len = 0;
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| 10 | char **mem = 0;
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| 11 | size_t nmem = 0;
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| 12 | int rv = 0;
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| 13 | size_t i;
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| 14 | int cs;
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| 15 |
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| 16 | pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
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| 17 |
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| 18 | rv = __getgr_a(name, gid, gr, &line, &len, &mem, &nmem, res);
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| 19 | if (*res && size < len + (nmem+1)*sizeof(char *) + 32) {
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| 20 | *res = 0;
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| 21 | rv = ERANGE;
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| 22 | }
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| 23 | if (*res) {
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| 24 | buf += (16-(uintptr_t)buf)%16;
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| 25 | gr->gr_mem = (void *)buf;
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| 26 | buf += (nmem+1)*sizeof(char *);
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| 27 | memcpy(buf, line, len);
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| 28 | FIX(name);
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| 29 | FIX(passwd);
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| 30 | for (i=0; mem[i]; i++)
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| 31 | gr->gr_mem[i] = mem[i]-line+buf;
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| 32 | gr->gr_mem[i] = 0;
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| 33 | }
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| 34 | free(mem);
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| 35 | free(line);
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| 36 | pthread_setcancelstate(cs, 0);
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| 37 | if (rv) errno = rv;
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| 38 | return rv;
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| 39 | }
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| 40 |
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| 41 | int getgrnam_r(const char *name, struct group *gr, char *buf, size_t size, struct group **res)
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| 42 | {
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| 43 | return getgr_r(name, 0, gr, buf, size, res);
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| 44 | }
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| 45 |
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| 46 | int getgrgid_r(gid_t gid, struct group *gr, char *buf, size_t size, struct group **res)
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| 47 | {
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| 48 | return getgr_r(0, gid, gr, buf, size, res);
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| 49 | }
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