102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2015.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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fstab/scanfsent.c
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Parse filesystem table entry.
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*******************************************************************************/
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#include <ctype.h>
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#include <fstab.h>
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#include <stdlib.h>
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#include <string.h>
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static char* next_fsent_field(char** str_p)
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{
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char* str = *str_p;
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while ( *str && isspace((unsigned char) *str) )
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str++;
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if ( !*str || *str == '#' )
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return NULL;
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size_t length = 1;
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while ( str[length] &&
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!isspace((unsigned char) str[length]) &&
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str[length] != '#' )
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length++;
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if ( str[length] )
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{
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char c = str[length];
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str[length] = '\0';
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*str_p = str + length + (c != '#' ? 1 : 0);
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}
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else
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*str_p = str + length;
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return str;
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}
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char* find_fstype(char* str)
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{
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const char* types[] =
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{
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FSTAB_RO,
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FSTAB_RQ,
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FSTAB_RW,
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FSTAB_SW,
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FSTAB_XX,
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};
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size_t count = sizeof(types) / sizeof(types[0]);
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while ( *str )
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{
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while ( *str == ',' )
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{
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str++;
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continue;
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}
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size_t length = strcspn(str, ",");
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if ( length == 2 )
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{
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for ( size_t i = 0; i < count; i++ )
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if ( str[0] == types[i][0] && str[1] == types[i][1] )
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return (char*) types[i];
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}
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str += length;
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}
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return NULL;
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}
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int scanfsent(char* str, struct fstab* fs)
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{
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char* str_freq;
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char* str_passno;
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if ( !(fs->fs_spec = next_fsent_field(&str)) ||
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!(fs->fs_file = next_fsent_field(&str)) ||
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!(fs->fs_vfstype = next_fsent_field(&str)) ||
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!(fs->fs_mntops = next_fsent_field(&str)) ||
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!(str_freq = next_fsent_field(&str)) ||
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!(str_passno = next_fsent_field(&str)) )
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return 0;
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if ( !(fs->fs_type = find_fstype(fs->fs_mntops)) )
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return 0;
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if ( !strcmp(fs->fs_type, "xx") )
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return 0;
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fs->fs_freq = atoi(str_freq);
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fs->fs_passno = atoi(str_passno);
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return 1;
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}
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