85 lines
1.1 KiB
C
85 lines
1.1 KiB
C
#ifndef _PARSE_MODE_H
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#define _PARSE_MODE_H
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#include <sys/stat.h>
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#define U(x) (x << 6)
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#define G(x) (x << 3)
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#define O(x) (x)
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#define A(x) (U(x) | G(x) | O(x))
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#define WR_PERM (2)
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#define EX_PERM (1)
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#define RD_PERM (4)
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#define FULL_PERM (7)
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mode_t mu_parse_mode(const char *s) {
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char *p = NULL;
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mode_t mode = (mode_t)strtol(s, &p, 8);
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if (!*p && mode < 07777U)
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return mode;
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else if (mode > 07777U)
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return 0;
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mode = 0;
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int append = 1;
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mode_t mask = 0;
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for (size_t i = 0; i < strlen(s); i++) {
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switch (s[i]) {
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case 'r':
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mode |= A(RD_PERM);
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break;
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case 'w':
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mode |= A(WR_PERM);
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break;
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case 'x':
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mode |= A(EX_PERM);
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break;
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case '+':
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append = 1;
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break;
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case '-':
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append = 0;
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break;
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case 'g':
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mask |= G(FULL_PERM);
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break;
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case 'u':
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mask |= U(FULL_PERM);
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break;
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case 'o':
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mask |= O(FULL_PERM);
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break;
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case 'a':
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mask |= A(FULL_PERM);
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break;
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default:
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return 0;
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}
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}
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if (mask == 0)
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mask = U(FULL_PERM);
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if (append)
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return mask & mode;
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mode_t test = mask & mode;
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printf("test: %d\n", test);
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return test;
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}
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#endif
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