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author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2021-01-21 00:21:53 +0300 |
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committer | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2021-01-23 09:56:53 +0300 |
commit | e97eb638de0dc8f6e989e20eaeb0342f103cb917 (patch) | |
tree | 2f788cffac7b0e107159fefc1133a156dac09c28 /fs/fat/fat_write.c | |
parent | 184aa6504143b452132e28cd3ebecc7b941cdfa1 (diff) | |
download | u-boot-e97eb638de0dc8f6e989e20eaeb0342f103cb917.tar.xz |
fs: fat: consistent error handling for flush_dir()
Provide function description for flush_dir().
Move all error messages for flush_dir() from the callers to the function.
Move mapping of errors to -EIO to the function.
Always check return value of flush_dir() (Coverity CID 316362).
In fat_unlink() return -EIO if flush_dirty_fat_buffer() fails.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'fs/fat/fat_write.c')
-rw-r--r-- | fs/fat/fat_write.c | 58 |
1 files changed, 31 insertions, 27 deletions
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index 20a54a2418..2f4391e86f 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -418,8 +418,12 @@ fill_dir_slot(fat_itr *itr, const char *l_name, const char *shortname) slotptr--; counter--; - if (itr->remaining == 0) - flush_dir(itr); + if (!itr->remaining) { + /* Write directory table to device */ + ret = flush_dir(itr); + if (ret) + return ret; + } next_dent(itr); if (!itr->dent) @@ -639,15 +643,23 @@ set_cluster(fsdata *mydata, u32 clustnum, u8 *buffer, u32 size) buffer, size); } -static int -flush_dir(fat_itr *itr) +/** + * flush_dir() - flush directory + * + * @itr: directory iterator + * Return: 0 for success, -EIO on error + */ +static int flush_dir(fat_itr *itr) { fsdata *mydata = itr->fsdata; u32 startsect, sect_offset, nsects; + int ret; - if (!itr->is_root || mydata->fatsize == 32) - return set_cluster(mydata, itr->clust, itr->block, - mydata->clust_size * mydata->sect_size); + if (!itr->is_root || mydata->fatsize == 32) { + ret = set_cluster(mydata, itr->clust, itr->block, + mydata->clust_size * mydata->sect_size); + goto out; + } sect_offset = itr->clust * mydata->clust_size; startsect = mydata->rootdir_sect + sect_offset; @@ -655,8 +667,14 @@ flush_dir(fat_itr *itr) nsects = min_t(u32, mydata->clust_size, mydata->rootdir_size - sect_offset); - return set_sectors(mydata, startsect, itr->block, - nsects * mydata->sect_size); + ret = set_sectors(mydata, startsect, itr->block, + nsects * mydata->sect_size); +out: + if (ret) { + log_err("Error: writing directory entry\n"); + return -EIO; + } + return 0; } /* @@ -1390,10 +1408,6 @@ int file_fat_write_at(const char *filename, loff_t pos, void *buffer, /* Write directory table to device */ ret = flush_dir(itr); - if (ret) { - printf("Error: writing directory entry\n"); - ret = -EIO; - } exit: free(filename_copy); @@ -1458,12 +1472,8 @@ static int delete_single_dentry(fat_itr *itr) memset(dent, 0, sizeof(*dent)); dent->name[0] = DELETED_FLAG; - if (!itr->remaining) { - if (flush_dir(itr)) { - printf("error: writing directory entry\n"); - return -EIO; - } - } + if (!itr->remaining) + return flush_dir(itr); return 0; } @@ -1530,12 +1540,7 @@ static int delete_dentry_long(fat_itr *itr) } /* Delete short name */ delete_single_dentry(itr); - if (flush_dir(itr)) { - printf("error: writing directory entry\n"); - return -EIO; - } - - return 0; + return flush_dir(itr); } int fat_unlink(const char *filename) @@ -1739,13 +1744,12 @@ int fat_mkdir(const char *new_dirname) ret = flush_dirty_fat_buffer(mydata); if (ret) { printf("Error: flush fat buffer\n"); + ret = -EIO; goto exit; } /* Write directory table to device */ ret = flush_dir(itr); - if (ret) - printf("Error: writing directory entry\n"); exit: free(dirname_copy); |