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path: root/fs/fat/fat_write.c
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Diffstat (limited to 'fs/fat/fat_write.c')
-rw-r--r--fs/fat/fat_write.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index 4f1772f..3542b0b 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -323,7 +323,7 @@ static void
fill_dir_slot(fsdata *mydata, dir_entry **dentptr, const char *l_name)
{
dir_slot *slotptr = (dir_slot *)get_vfatname_block;
- __u8 counter, checksum;
+ __u8 counter = 0, checksum;
int idx = 0, ret;
char s_name[16];
@@ -926,6 +926,7 @@ static int do_fat_write(const char *filename, void *buffer,
int cursect;
int root_cluster, ret = -1, name_len;
char l_filename[VFAT_MAXLEN_BYTES];
+ int write_size = size;
dir_curclust = 0;
@@ -985,7 +986,11 @@ static int do_fat_write(const char *filename, void *buffer,
dentptr = (dir_entry *) do_fat_read_block;
name_len = strlen(filename);
+ if (name_len >= VFAT_MAXLEN_BYTES)
+ name_len = VFAT_MAXLEN_BYTES - 1;
+
memcpy(l_filename, filename, name_len);
+ l_filename[name_len] = 0; /* terminate the string */
downcase(l_filename);
startsect = mydata->rootdir_sect;
@@ -1012,10 +1017,12 @@ static int do_fat_write(const char *filename, void *buffer,
}
ret = set_contents(mydata, retdent, buffer, size);
- if (ret) {
+ if (ret < 0) {
printf("Error: writing contents\n");
goto exit;
}
+ write_size = ret;
+ debug("attempt to write 0x%x bytes\n", write_size);
/* Flush fat buffer */
ret = flush_fat_buffer(mydata);
@@ -1029,7 +1036,7 @@ static int do_fat_write(const char *filename, void *buffer,
get_dentfromdir_block,
mydata->clust_size * mydata->sect_size);
if (ret) {
- printf("Error: wrinting directory entry\n");
+ printf("Error: writing directory entry\n");
goto exit;
}
} else {
@@ -1056,10 +1063,12 @@ static int do_fat_write(const char *filename, void *buffer,
start_cluster, size, 0x20);
ret = set_contents(mydata, empty_dentptr, buffer, size);
- if (ret) {
+ if (ret < 0) {
printf("Error: writing contents\n");
goto exit;
}
+ write_size = ret;
+ debug("attempt to write 0x%x bytes\n", write_size);
/* Flush fat buffer */
ret = flush_fat_buffer(mydata);
@@ -1080,7 +1089,7 @@ static int do_fat_write(const char *filename, void *buffer,
exit:
free(mydata->fatbuf);
- return ret;
+ return ret < 0 ? ret : write_size;
}
int file_fat_write(const char *filename, void *buffer, unsigned long maxsize)