73 lines
1.7 KiB
C
73 lines
1.7 KiB
C
#ifndef _PARSE_MOUNT_H
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#define _PARSE_MOUNT_H
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#include <string.h>
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typedef struct {
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char *opt;
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char *notopt;
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char *desc;
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unsigned int val;
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} MU_MOUNT_OPTS;
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MU_MOUNT_OPTS mu_options[] = {
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{"defaults", NULL, NULL, 0},
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{"ro", "rw", "Read only / Read and write", MS_RDONLY},
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{"remount", NULL, "Remount a mounted filesystem", MS_REMOUNT},
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{"sync", "async", "Writes are [a]synchronous", MS_SYNCHRONOUS},
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{"nodev", "dev", "(Dis)allow use of special device files", MS_NODEV},
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{"bind", "rbind", "Bind a file or directory", MS_BIND},
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{"noexec", "exec", "(Dis)allow use of executable files", MS_NOEXEC},
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{"noatime", "atime", "Disable/enable updates to inode access times", MS_NOATIME}
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};
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unsigned long mu_parse_opts(char *str, char *data, const size_t data_size) {
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memset(data, '\0', data_size);
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unsigned long opt = 0;
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size_t data_len = 0;
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char *token = strtok(str, ",");
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while (token != NULL) {
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int invalidopt = 1;
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for (size_t i = 0; i < sizeof(mu_options) / sizeof(mu_options[0]); i++) {
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if (mu_options[i].opt && !strcmp(token, mu_options[i].opt)) {
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opt |= mu_options[i].val;
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invalidopt = 0;
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break;
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}
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if (mu_options[i].notopt && !strcmp(token, mu_options[i].notopt)) {
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opt &= ~mu_options[i].val;
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invalidopt = 0;
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break;
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}
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}
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/* Unknow opt, pass in mount() */
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size_t len = strlen(token);
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if (invalidopt && len > 0) {
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/* Copy token string */
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for (size_t i = 0; i < len; i++) {
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if (data_len + 1 >= data_size)
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break;
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else {
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data[data_len] = token[i];
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data_len++;
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}
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}
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if (data_len && data_len + 1 < data_size)
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data[data_len++] = ',';
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}
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token = strtok(NULL, ",");
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}
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if (data_len > 0)
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data[data_len - 1] = '\0';
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return opt;
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}
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#endif
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