* Sebastian Hammer, Adam Dickmeiss
*
* $Log: mfile.c,v $
- * Revision 1.6 1994-09-14 13:10:15 quinn
+ * Revision 1.20 1996-05-14 12:10:16 quinn
+ * Bad areadef scan
+ *
+ * Revision 1.19 1996/05/01 07:16:30 quinn
+ * Fixed ancient bug.
+ *
+ * Revision 1.18 1996/04/09 06:47:30 adam
+ * Function scan_areadef doesn't use sscanf (%n fails on this Linux).
+ *
+ * Revision 1.17 1996/03/20 13:29:11 quinn
+ * Bug-fix
+ *
+ * Revision 1.16 1995/12/12 15:57:57 adam
+ * Implemented mf_unlink. cf_unlink uses mf_unlink.
+ *
+ * Revision 1.15 1995/12/08 16:21:14 adam
+ * Work on commit/update.
+ *
+ * Revision 1.14 1995/12/05 13:12:37 quinn
+ * Added <errno.h>
+ *
+ * Revision 1.13 1995/11/30 17:00:50 adam
+ * Several bug fixes. Commit system runs now.
+ *
+ * Revision 1.12 1995/11/24 17:26:11 quinn
+ * Mostly about making some ISAM stuff in the config file optional.
+ *
+ * Revision 1.11 1995/11/13 09:32:43 quinn
+ * Comment work.
+ *
+ * Revision 1.10 1995/09/04 12:33:22 adam
+ * Various cleanup. YAZ util used instead.
+ *
+ * Revision 1.9 1994/11/04 14:26:39 quinn
+ * bug-fix.
+ *
+ * Revision 1.8 1994/10/05 16:56:42 quinn
+ * Minor.
+ *
+ * Revision 1.7 1994/09/19 14:12:37 quinn
+ * dunno.
+ *
+ * Revision 1.6 1994/09/14 13:10:15 quinn
* Corrected some bugs in the init-phase
*
* Revision 1.5 1994/09/12 08:01:51 quinn
#include <unistd.h>
#include <dirent.h>
#include <stdlib.h>
+#include <stdio.h>
#include <assert.h>
+#include <errno.h>
-#include <util.h>
+#include <alexutil.h>
#include <mfile.h>
static MFile_area_struct *open_areas = 0;
static int scan_areadef(MFile_area ma, const char *name)
{
- const char *ad = res_get(common_resource, name);
- int offset = 0, rs, size, multi, rd;
- char dirname[FILENAME_MAX+1], unit;
+ /*
+ * If no definition is given, use current directory, unlimited.
+ */
+ const char *ad = res_get_def(common_resource, name, ".:-1b");
+ char dirname[FILENAME_MAX+1];
mf_dir **dp = &ma->dirs, *dir = *dp;
if (!ad)
{
- log(LOG_FATAL, "Could not find resource '%s'", name);
+ logf (LOG_FATAL, "Could not find resource '%s'", name);
return -1;
}
for (;;)
{
- rs = sscanf(ad + offset, "%[^:]:%d%c %n", dirname, &size, &unit, &rd);
- if (rs <= 1)
- break;
- if (rs != 3)
+ const char *ad0 = ad;
+ int i = 0, fact = 1, multi, size = 0;
+
+ while (*ad == ' ' || *ad == '\t')
+ ad++;
+ if (!*ad)
+ break;
+ while (*ad && *ad != ':')
{
- log(LOG_FATAL, "Illegal directory description: %s", ad + offset);
- return -1;
- }
- switch (unit)
+ if (i < FILENAME_MAX)
+ dirname[i++] = *ad;
+ ad++;
+ }
+ dirname[i] = '\0';
+ if (*ad++ != ':')
+ {
+ logf (LOG_FATAL, "Missing colon after path: %s", ad0);
+ return -1;
+ }
+ if (i == 0)
+ {
+ logf (LOG_FATAL, "Empty path: %s", ad0);
+ return -1;
+ }
+ while (*ad == ' ' || *ad == '\t')
+ ad++;
+ if (*ad == '-')
+ {
+ fact = -1;
+ ad++;
+ }
+ else if (*ad == '+')
+ ad++;
+ size = 0;
+ if (*ad < '0' || *ad > '9')
+ {
+ logf (LOG_FATAL, "Missing size after path: %s", ad0);
+ return -1;
+ }
+ size = 0;
+ while (*ad >= '0' && *ad <= '9')
+ size = size*10 + (*ad++ - '0');
+ switch (*ad)
{
case 'B': case 'b': multi = 1; break;
case 'K': case 'k': multi = 1024; break;
case 'M': case 'm': multi = 1048576; break;
+ case '\0':
+ logf (LOG_FATAL, "Missing unit: %s", ad0);
+ return -1;
default:
- log(LOG_FATAL, "Illegal unit: %c in %s", unit, ad + offset);
+ logf (LOG_FATAL, "Illegal unit: %c in %s", *ad, ad0);
return -1;
}
+ ad++;
*dp = dir = xmalloc(sizeof(mf_dir));
dir->next = 0;
strcpy(dir->name, dirname);
- dir->max_bytes = dir->avail_bytes = size * multi;
+ dir->max_bytes = dir->avail_bytes = fact * size * multi;
dp = &dir->next;
- offset += rd;
}
return 0;
}
(c < mf->no_files -1 && pos > mf->files[c].top))
{
c = 0;
- while (mf->files[c].top >= 0 && mf->files[c].top < pos)
+ while (c + 1 < mf->no_files && mf->files[c].top < pos)
{
off += mf->files[c].blocks;
c++;
if (mf->files[c].fd < 0 && (mf->files[c].fd = open(mf->files[c].path,
mf->wr ? O_RDWR|O_CREAT : O_RDONLY, 0666)) < 0)
{
- log(LOG_FATAL|LOG_ERRNO, "Failed to open %s", mf->files[c].path);
+ if (!mf->wr && errno == ENOENT && off == 0)
+ return -2;
+ logf (LOG_FATAL|LOG_ERRNO, "Failed to open %s", mf->files[c].path);
return -1;
}
if (lseek(mf->files[c].fd, (ps = pos - off) * mf->blocksize + offset,
SEEK_SET) < 0)
{
- log(LOG_FATAL|LOG_ERRNO, "Failed to seek in %s", mf->files[c].path);
+ logf (LOG_FATAL|LOG_ERRNO, "Failed to seek in %s", mf->files[c].path);
return -1;
}
mf->cur_file = c;
MFile_area ma = xmalloc(sizeof(MFile_area_struct)), mp;
mf_dir *dirp;
meta_file *meta_f;
- part_file *part_f;
+ part_file *part_f = 0;
DIR *dd;
struct dirent *dent;
int fd, number;
char metaname[FILENAME_MAX+1], tmpnam[FILENAME_MAX+1];
- log(LOG_DEBUG, "mf_init(%s)", name);
+ logf (LOG_DEBUG, "mf_init(%s)", name);
for (mp = open_areas; mp; mp = mp->next)
if (!strcmp(name, mp->name))
- abort();
+ return mp;
+ ma = xmalloc(sizeof(MFile_area_struct));
strcpy(ma->name, name);
ma->next = open_areas;
open_areas = ma;
ma->dirs = 0;
if (scan_areadef(ma, name) < 0)
{
- log(LOG_FATAL, "Failed to access description of '%s'", name);
+ logf (LOG_FATAL, "Failed to access description of '%s'", name);
return 0;
}
/* look at each directory */
{
if (!(dd = opendir(dirp->name)))
{
- log(LOG_FATAL|LOG_ERRNO, "Failed to open %s", dirp->name);
+ logf (LOG_FATAL|LOG_ERRNO, "Failed to open %s", dirp->name);
return 0;
}
/* look at each file */
{
if (*dent->d_name == '.')
continue;
- if (sscanf(dent->d_name, "%[^.].%d", metaname, &number) != 2)
+ if (sscanf(dent->d_name, "%[^.].mf.%d", metaname, &number) != 2)
{
- log(LOG_FATAL, "Failed to resolve part-name %s", dent->d_name);
- return 0;
+ logf (LOG_DEBUG, "bf: %s is not a part-file.", dent->d_name);
+ continue;
}
for (meta_f = ma->mfiles; meta_f; meta_f = meta_f->next)
{
/* get size */
if ((fd = open(part_f->path, O_RDONLY)) < 0)
{
- log(LOG_FATAL|LOG_ERRNO, "Failed to access %s", dent->d_name);
+ logf (LOG_FATAL|LOG_ERRNO, "Failed to access %s",
+ dent->d_name);
return 0;
}
if ((part_f->bytes = lseek(fd, 0, SEEK_END)) < 0)
{
- log(LOG_FATAL|LOG_ERRNO, "Failed to seek in %s", dent->d_name);
+ logf (LOG_FATAL|LOG_ERRNO, "Failed to seek in %s",
+ dent->d_name);
return 0;
}
close(fd);
- dirp->avail_bytes -= part_f->bytes;
+ if (dirp->max_bytes >= 0)
+ dirp->avail_bytes -= part_f->bytes;
}
closedir(dd);
}
for (meta_f = ma->mfiles; meta_f; meta_f = meta_f->next)
{
- log(LOG_DEBUG, "mf_init: %s consists of %d part(s)", meta_f->name,
- meta_f->no_files);
+ logf (LOG_DEBUG, "mf_init: %s consists of %d part(s)", meta_f->name,
+ meta_f->no_files);
qsort(meta_f->files, meta_f->no_files, sizeof(part_file),
- cmp_part_file);
+ cmp_part_file);
}
return ma;
}
char tmp[FILENAME_MAX+1];
mf_dir *dp;
- log(LOG_LOG, "mf_open(%s bs=%d, %s)", name, block_size,
- wflag ? "RW" : "RDONLY");
+ logf(LOG_DEBUG, "mf_open(%s bs=%d, %s)", name, block_size,
+ wflag ? "RW" : "RDONLY");
if (!ma)
{
if (!default_area && !(default_area = mf_init(MF_DEFAULT_AREA)))
{
- log(LOG_FATAL, "Failed to open default area.");
+ logf (LOG_FATAL, "Failed to open default area.");
return 0;
}
ma = default_area;
new->files[0].number = 0;
new->files[0].fd = -1;
new->min_bytes_creat = MF_MIN_BLOCKS_CREAT * block_size;
- for (dp = ma->dirs; dp && dp->avail_bytes < new->min_bytes_creat;
- dp = dp->next);
+ for (dp = ma->dirs; dp && dp->max_bytes >= 0 && dp->avail_bytes <
+ new->min_bytes_creat; dp = dp->next);
if (!dp)
{
- log(LOG_FATAL, "Insufficient space for new mfile.");
+ logf (LOG_FATAL, "Insufficient space for new mfile.");
return 0;
}
new->files[0].dir = dp;
- sprintf(tmp, "%s/%s.%d", dp->name, new->name, 0);
+ sprintf(tmp, "%s/%s.mf.%d", dp->name, new->name, 0);
new->files[0].path = xstrdup(tmp);
new->ma = ma;
}
for (i = 0; i < new->no_files; i++)
{
new->files[i].blocks = new->files[i].bytes / new->blocksize;
- if (i == new->no_files)
+ if (i == new->no_files - 1)
new->files[i].top = -1;
else
new->files[i].top = i ? (new->files[i-1].top + new->files[i].blocks)
{
int i;
+ logf (LOG_DEBUG, "mf_close(%s)", mf->name);
assert(mf->open);
for (i = 0; i < mf->no_files; i++)
if (mf->files[i].fd >= 0)
+ {
close(mf->files[i].fd);
+ mf->files[i].fd = -1;
+ }
mf->open = 0;
return 0;
}
{
int rd, toread;
- if (file_position(mf, no, offset) < 0)
- exit(1);
+ if ((rd = file_position(mf, no, offset)) < 0)
+ if (rd == -2)
+ return 0;
+ else
+ exit(1);
toread = num ? num : mf->blocksize;
if ((rd = read(mf->files[mf->cur_file].fd, buf, toread)) < 0)
{
- log(LOG_FATAL|LOG_ERRNO, "mf_read: Read failed (%s)",
- mf->files[mf->cur_file].path);
+ logf (LOG_FATAL|LOG_ERRNO, "mf_read: Read failed (%s)",
+ mf->files[mf->cur_file].path);
exit(1);
}
else if (rd < toread)
/* file needs to grow */
while (ps >= mf->files[mf->cur_file].blocks)
{
- log(LOG_DEBUG, "File grows");
/* file overflow - allocate new file */
- if ((ps - mf->files[mf->cur_file].blocks + 1) * mf->blocksize >
+ if (mf->files[mf->cur_file].dir->max_bytes >= 0 &&
+ (ps - mf->files[mf->cur_file].blocks + 1) * mf->blocksize >
mf->files[mf->cur_file].dir->avail_bytes)
{
/* cap off file? */
if ((nblocks = mf->files[mf->cur_file].dir->avail_bytes /
mf->blocksize) > 0)
{
- log(LOG_DEBUG, "Capping off file %s at pos %d",
+ logf (LOG_DEBUG, "Capping off file %s at pos %d",
mf->files[mf->cur_file].path, nblocks);
if ((ps = file_position(mf,
(mf->cur_file ? mf->files[mf->cur_file-1].top : 0) +
exit(1);
if (write(mf->files[mf->cur_file].fd, &dummych, 1) < 1)
{
- log(LOG_ERRNO|LOG_FATAL, "write dummy");
+ logf (LOG_ERRNO|LOG_FATAL, "write dummy");
exit(1);
}
mf->files[mf->cur_file].blocks += nblocks;
mf->blocksize;
}
/* get other bit */
- log(LOG_DEBUG, "Creating new file.");
- for (dp = mf->ma->dirs; dp && dp->avail_bytes < mf->min_bytes_creat;
- dp = dp->next);
+ logf (LOG_DEBUG, "Creating new file.");
+ for (dp = mf->ma->dirs; dp && dp->max_bytes >= 0 &&
+ dp->avail_bytes < mf->min_bytes_creat; dp = dp->next);
if (!dp)
{
- log(LOG_FATAL, "Cannot allocate more space for %s", mf->name);
+ logf (LOG_FATAL, "Cannot allocate more space for %s",
+ mf->name);
exit(1);
}
mf->files[mf->cur_file].top = (mf->cur_file ?
mf->files[mf->cur_file].blocks =
mf->files[mf->cur_file].bytes = 0;
mf->files[mf->cur_file].fd = -1;
- sprintf(tmp, "%s/%s.%d", dp->name, mf->name,
+ sprintf(tmp, "%s/%s.mf.%d", dp->name, mf->name,
mf->files[mf->cur_file].number);
mf->files[mf->cur_file].path = xstrdup(tmp);
mf->no_files++;
nblocks = ps - mf->files[mf->cur_file].blocks + 1;
mf->files[mf->cur_file].blocks += nblocks;
mf->files[mf->cur_file].bytes += nblocks * mf->blocksize;
- mf->files[mf->cur_file].dir->avail_bytes -= nblocks * mf->blocksize;
+ if (mf->files[mf->cur_file].dir->max_bytes >= 0)
+ mf->files[mf->cur_file].dir->avail_bytes -=
+ nblocks * mf->blocksize;
}
}
towrite = num ? num : mf->blocksize;
if (write(mf->files[mf->cur_file].fd, buf, towrite) < towrite)
{
- log(LOG_FATAL|LOG_ERRNO, "Write failed");
+ logf (LOG_FATAL|LOG_ERRNO, "Write failed");
exit(1);
}
return 0;
*/
int mf_unlink(MFile mf)
{
- abort();
+ int i;
+
+ for (i = 0; i < mf->no_files; i++)
+ unlink (mf->files[i].path);
return 0;
}
projects / idzebra-moved-to-github.git / blobdiff