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Added _FAT_rename_r for use when devoptab_t is extended.

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This commit is contained in:
Michael Chisholm 2006-07-17 08:10:00 +00:00
parent b540acafed
commit 9ad203bc6d
2 changed files with 119 additions and 7 deletions
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113
source/fatfile.c
View File

@ -29,6 +29,10 @@
2006-07-11 - Chishm 2006-07-11 - Chishm
* Original release * Original release
2006-07-17 - Chishm
* Made all path inputs const char*
* Added _FAT_rename_r
*/ */
@ -840,12 +844,12 @@ int _FAT_stat_r (struct _reent *r,const char *path, struct stat *st) {
return 0; return 0;
} }
int _FAT_link_r (struct _reent *r, char *existing, char *newLink) { int _FAT_link_r (struct _reent *r, const char *existing, const char *newLink) {
r->_errno = ENOTSUP; r->_errno = ENOTSUP;
return -1; return -1;
} }
int _FAT_unlink_r (struct _reent *r, char *path) { int _FAT_unlink_r (struct _reent *r, const char *path) {
PARTITION* partition = NULL; PARTITION* partition = NULL;
DIR_ENTRY dirEntry; DIR_ENTRY dirEntry;
DIR_ENTRY dirContents; DIR_ENTRY dirContents;
@ -926,7 +930,7 @@ int _FAT_unlink_r (struct _reent *r, char *path) {
} }
} }
int _FAT_chdir_r (struct _reent *r, char *path) { int _FAT_chdir_r (struct _reent *r, const char *path) {
PARTITION* partition = NULL; PARTITION* partition = NULL;
// Get the partition this directory is on // Get the partition this directory is on
@ -962,3 +966,106 @@ int _FAT_chdir_r (struct _reent *r, char *path) {
return -1; return -1;
} }
} }
int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName) {
PARTITION* partition = NULL;
DIR_ENTRY oldDirEntry;
DIR_ENTRY newDirEntry;
const char *pathEnd;
u32 dirCluster;
// Get the partition this directory is on
partition = _FAT_partition_getPartitionFromPath (oldName);
if (partition == NULL) {
r->_errno = ENODEV;
return -1;
}
// Make sure the same partition is used for the old and new names
if (partition != _FAT_partition_getPartitionFromPath (newName)) {
r->_errno = EXDEV;
return -1;
}
// Make sure we aren't trying to write to a read-only disc
if (partition->readOnly) {
r->_errno = EROFS;
return -1;
}
// Move the path pointer to the start of the actual path
if (strchr (oldName, ':') != NULL) {
oldName = strchr (oldName, ':') + 1;
}
if (strchr (oldName, ':') != NULL) {
r->_errno = EINVAL;
return -1;
}
if (strchr (newName, ':') != NULL) {
newName = strchr (newName, ':') + 1;
}
if (strchr (newName, ':') != NULL) {
r->_errno = EINVAL;
return -1;
}
// Search for the file on the disc
if (!_FAT_directory_entryFromPath (partition, &oldDirEntry, oldName, NULL)) {
r->_errno = ENOENT;
return -1;
}
// Make sure there is no existing file / directory with the new name
if (_FAT_directory_entryFromPath (partition, &newDirEntry, newName, NULL)) {
r->_errno = EEXIST;
return -1;
}
// Create the new file entry
// Get the directory it has to go in
pathEnd = strrchr (newName, DIR_SEPARATOR);
if (pathEnd == NULL) {
// No path was specified
dirCluster = partition->cwdCluster;
pathEnd = newName;
} else {
// Path was specified -- get the right dirCluster
// Recycling newDirEntry, since it needs to be recreated anyway
if (!_FAT_directory_entryFromPath (partition, &newDirEntry, newName, pathEnd) ||
!_FAT_directory_isDirectory(&newDirEntry)) {
r->_errno = ENOTDIR;
return -1;
}
dirCluster = _FAT_directory_entryGetCluster (newDirEntry.entryData);
// Move the pathEnd past the last DIR_SEPARATOR
pathEnd += 1;
}
// Copy the entry data
memcpy (&newDirEntry, &oldDirEntry, sizeof(DIR_ENTRY));
// Set the new name
strncpy (newDirEntry.filename, pathEnd, MAX_FILENAME_LENGTH - 1);
// Write the new entry
if (!_FAT_directory_addEntry (partition, &newDirEntry, dirCluster)) {
r->_errno = ENOSPC;
return -1;
}
// Remove the old entry
if (!_FAT_directory_removeEntry (partition, &oldDirEntry)) {
r->_errno = EIO;
return -1;
}
// Flush any sectors in the disc cache
if (!_FAT_cache_flush (partition->cache)) {
r->_errno = EIO;
return -1;
}
return 0;
}

11
source/fatfile.h
View File

@ -29,6 +29,10 @@
2006-07-11 - Chishm 2006-07-11 - Chishm
* Original release * Original release
2006-07-17 - Chishm
* Made all path inputs const char*
* Added _FAT_rename_r
*/ */
@ -78,11 +82,12 @@ extern int _FAT_fstat_r (struct _reent *r, int fd, struct stat *st);
extern int _FAT_stat_r (struct _reent *r, const char *path, struct stat *st); extern int _FAT_stat_r (struct _reent *r, const char *path, struct stat *st);
extern int _FAT_link_r (struct _reent *r, char *existing, char *newLink); extern int _FAT_link_r (struct _reent *r, const char *existing, const char *newLink);
extern int _FAT_unlink_r (struct _reent *r, char *name); extern int _FAT_unlink_r (struct _reent *r, const char *name);
extern int _FAT_chdir_r (struct _reent *r, char *name); extern int _FAT_chdir_r (struct _reent *r, const char *name);
extern int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName);
#endif // _FATFILE_H #endif // _FATFILE_H