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Added a split boolean argument to dir_open so the trick with setting the

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dir/filename separator to 0 can be avoided, and we don't need to calculate
its location in split_path(). Without the trick many more char * path
arguments in the kernel can become "const char *".


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@1444 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Bart Oldeman 2009-06-13 04:31:55 +00:00
parent 5c0be166ee
commit d20b59ebe0
3 changed files with 15 additions and 33 deletions
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13
kernel/fatdir.c
View File

@ -58,7 +58,7 @@ VOID dir_init_fnode(f_node_ptr fnp, CLUSTER dirstart)
fnp->f_cluster = fnp->f_dmp->dm_dircluster = dirstart;
}
f_node_ptr dir_open(register const char *dirname, f_node_ptr fnp)
f_node_ptr dir_open(register const char *dirname, BOOL split, f_node_ptr fnp)
{
int i;
char *fcbname;
@ -87,18 +87,19 @@ f_node_ptr dir_open(register const char *dirname, f_node_ptr fnp)
fcbname = fnp->f_dmp->dm_name_pat;
while(*dirname != '\0')
{
/* skip all path seperators */
while (*dirname == '\\')
/* skip the path seperator */
++dirname;
/* don't continue if we're at the end */
if (*dirname == '\0')
break;
/* Convert the name into an absolute name for */
/* comparison... */
dirname = ConvertNameSZToName83(fcbname, dirname);
/* do not continue if we split the filename off and are */
/* at the end */
if (split && *dirname == '\0')
break;
/* Now search through the directory to */
/* find the entry... */
i = FALSE;

29
kernel/fatfs.c
View File

@ -254,18 +254,10 @@ COUNT dos_close(COUNT fd)
/* */
/* split a path into it's component directory and file name */
/* */
f_node_ptr split_path(char * path, f_node_ptr fnp)
f_node_ptr split_path(const char * path, f_node_ptr fnp)
{
/* Start off by parsing out the components. */
int i = 2, dirlength = 3;
/* Now see how long a directory component we have. */
while (path[i])
if (path[i++] == '\\')
dirlength = i;
/* check if the path ends in a backslash */
if (path[dirlength] == '\0')
if (path[strlen(path) - 1] == '\\')
return (f_node_ptr) 0;
/* 11/29/99 jt
@ -289,18 +281,7 @@ f_node_ptr split_path(char * path, f_node_ptr fnp)
#endif
/* Translate the path into a useful pointer */
{
char tmp = path[dirlength];
path[dirlength] = '\0';
fnp = dir_open(path, fnp);
path[dirlength] = tmp;
}
/* Extract the 8.3 filename from the path */
if (fnp)
ConvertNameSZToName83(fnp->f_dmp->dm_name_pat, &path[dirlength]);
return fnp;
return dir_open(path, TRUE, fnp);
}
/* checks whether directory part of path exists */
@ -498,7 +479,7 @@ COUNT dos_rmdir(BYTE * path)
/* Check that the directory is empty. Only the */
/* "." and ".." are permissable. */
fnp = dir_open(path, &fnode[0]);
fnp = dir_open(path, FALSE, &fnode[0]);
if (fnp == NULL)
return DE_PATHNOTFND;
@ -1539,7 +1520,7 @@ int dos_cd(char * PathName)
return DE_INVLDDRV;
/* now test for its existance. If it doesn't, return an error. */
if ((fnp = dir_open(PathName, &fnode[0])) == NULL)
if ((fnp = dir_open(PathName, FALSE, &fnode[0])) == NULL)
return DE_PATHNOTFND;
/* problem: RBIL table 01643 does not give a FAT32 field for the

4
kernel/proto.h
View File

@ -136,7 +136,7 @@ VOID fatal(BYTE * err_msg);
/* fatdir.c */
VOID dir_init_fnode(f_node_ptr fnp, CLUSTER dirstart);
f_node_ptr dir_open(const char *dirname, f_node_ptr fnp);
f_node_ptr dir_open(const char *dirname, BOOL split, f_node_ptr fnp);
COUNT dir_read(REG f_node_ptr fnp);
BOOL dir_write_update(REG f_node_ptr fnp, BOOL update);
#define dir_write(fnp) dir_write_update(fnp, FALSE)
@ -168,7 +168,7 @@ CLUSTER dos_free(struct dpb FAR * dpbp);
BOOL dir_exists(char * path);
VOID dpb16to32(struct dpb FAR *dpbp);
f_node_ptr split_path(char *, f_node_ptr fnp);
f_node_ptr split_path(const char *, f_node_ptr fnp);
int dos_cd(char * PathName);