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fs/squashfs: simplify sqfs_read()
* Don't check argument of free(). Free does this itself. * Reduce scope of data_buffer. Remove duplicate free(). * Avoid superfluous NULL assignment. Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
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parent
7ffc66e7db
commit
9bd89bbd71
1 changed files with 5 additions and 8 deletions
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@ -1310,7 +1310,7 @@ static int sqfs_get_lregfile_info(struct squashfs_lreg_inode *lreg,
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int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
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loff_t *actread)
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{
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char *dir = NULL, *fragment_block, *datablock = NULL, *data_buffer = NULL;
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char *dir = NULL, *fragment_block, *datablock = NULL;
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char *fragment = NULL, *file = NULL, *resolved, *data;
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u64 start, n_blks, table_size, data_offset, table_offset, sparse_size;
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int ret, j, i_number, datablk_count = 0;
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@ -1440,6 +1440,8 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
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}
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for (j = 0; j < datablk_count; j++) {
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char *data_buffer;
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start = data_offset / ctxt.cur_dev->blksz;
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table_size = SQFS_BLOCK_SIZE(finfo.blk_sizes[j]);
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table_offset = data_offset - (start * ctxt.cur_dev->blksz);
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@ -1501,9 +1503,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
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}
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data_offset += table_size;
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if (data_buffer)
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free(data_buffer);
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data_buffer = NULL;
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free(data_buffer);
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if (*actread >= len)
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break;
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}
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@ -1563,10 +1563,7 @@ int sqfs_read(const char *filename, void *buf, loff_t offset, loff_t len,
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out:
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free(fragment);
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if (datablk_count) {
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free(data_buffer);
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free(datablock);
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}
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free(datablock);
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free(file);
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free(dir);
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free(finfo.blk_sizes);
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