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Improve mdb_open's error handling

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whydoubt 2004-06-02 12:31:18 +00:00
parent 5772a41e6e
commit 8e5b7ee293
2 changed files with 11 additions and 7 deletions
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3
ChangeLog
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@ -1,3 +1,6 @@
Wed Jun 2 07:31:04 CDT 2004 Jeff Smith <whydoubt@yahoo.com>
* src/libmdb/file.c: Improve mdb_open's error handling
Mon May 31 12:19:05 CDT 2004 Jeff Smith <whydoubt@yahoo.com>
* src/libmdb/file.c: Make better use of glib functions

15
src/libmdb/file.c
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@ -103,13 +103,12 @@ MdbHandle *mdb_open(char *filename, MdbFileFlags flags)
/* need something to bootstrap with, reassign after page 0 is read */
mdb->fmt = &MdbJet3Constants;
mdb->f = (MdbFile *) g_malloc0(sizeof(MdbFile));
mdb->f->refs = 1;
mdb->f->fd = -1;
mdb->f->filename = (char *) mdb_find_file(filename);
if (!mdb->f->filename) {
fprintf(stderr, "Can't alloc filename\n");
g_free(mdb->f->filename);
g_free(mdb->f);
g_free(mdb->backend_name);
g_free(mdb);
mdb_close(mdb);
return NULL;
}
if (flags & MDB_WRITABLE) {
@ -121,14 +120,16 @@ MdbHandle *mdb_open(char *filename, MdbFileFlags flags)
if (mdb->f->fd==-1) {
fprintf(stderr,"Couldn't open file %s\n",mdb->f->filename);
mdb_close(mdb);
return NULL;
}
if (!mdb_read_pg(mdb, 0)) {
fprintf(stderr,"Couldn't read first page.\n");
mdb_close(mdb);
return NULL;
}
if (mdb->pg_buf[0] != 0) {
close(mdb->f->fd);
mdb_close(mdb);
return NULL;
}
mdb->f->jet_version = mdb_pg_get_int32(mdb, 0x14);
@ -138,10 +139,10 @@ MdbHandle *mdb_open(char *filename, MdbFileFlags flags)
mdb->fmt = &MdbJet3Constants;
} else {
fprintf(stderr,"Unknown Jet version.\n");
mdb_close(mdb);
return NULL;
}
mdb->f->refs++;
return mdb;
}
@ -164,7 +165,7 @@ mdb_close(MdbHandle *mdb)
if (mdb->f->refs > 1) {
mdb->f->refs--;
} else {
if (mdb->f->fd) close(mdb->f->fd);
if (mdb->f->fd != -1) close(mdb->f->fd);
g_free(mdb->f->filename);
g_free(mdb->f);
}