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#include <ctype.h>
#include <stdlib.h>
#include "fsent.h"
static int nextword(char **s)
{
for (; **s; (*s)++)
if (!isspace(**s)) return 1;
return 0;
}
static void endword(char **s)
{
for (; **s; (*s)++)
if (isspace(**s)) { *(*s)++ = 0; break; }
}
static int scan_int(char *s)
{
unsigned int x = 0;
for (; *s-'0'<10U; ++s) x = 10*x + (*s-'0');
return (int)x;
}
static inline int hasmntopt(char const *blob, char const *opt)
{
size_t optlen = strlen(opt);
char const *s = blob;
for (;;)
{
char const *p = strstr(s, opt);
if (!p) break;
if ((p == s || p[-1] == ',') && (!p[optlen] || p[optlen] == '=' || p[optlen] == ','))
return 1;
s = strchr(p, ',');
if (!s) break;
s++;
}
return 0;
}
static inline void compute_legacy_fs_type(struct fstab *fstab)
{
if (!strcmp(fstab->fs_vfstype, "ignore")) fstab->fs_type = FSTAB_XX;
else if (!strcmp(fstab->fs_vfstype, "swap")) fstab->fs_type = FSTAB_SW;
else if (hasmntopt(fstab->fs_mntops, "ro")) fstab->fs_type = FSTAB_RO;
else fstab->fs_type = FSTAB_RW;
}
int __getfsent_a(FILE *f, struct fstab *fstab, char **line, size_t *size)
{
for (;;)
{
char *s;
char *tmp;
size_t l = getline(line, size, f);
if (l < 0)
{
free(*line);
*line = 0;
return 0;
}
s = *line;
if (*s == '#') continue;
if (!nextword(&s)) continue; fstab->fs_spec = s; endword(&s);
if (!nextword(&s)) continue; fstab->fs_file = s; endword(&s);
if (!nextword(&s)) continue; fstab->fs_vfstype = s; endword(&s);
if (!nextword(&s)) continue; fstab->fs_mntops = s; endword(&s);
fstab->fs_freq = fstab->fs_passno = 0;
compute_legacy_fs_type(fstab);
if (!nextword(&s)) return 1; tmp = s; endword(&s);
fstab->fs_freq = scan_int(tmp);
if (!nextword(&s)) return 1; tmp = s; endword(&s);
fstab->fs_passno = scan_int(tmp);
return 1;
}
}
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