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author | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2023-01-31 11:21:30 +0100 |
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committer | David Oberhollenzer <david.oberhollenzer@sigma-star.at> | 2023-01-31 13:51:49 +0100 |
commit | cdccc69c62579b0c13b35fad0728079652b8f3c9 (patch) | |
tree | 9fa54c710f73c5e08a9c8466e7a712eb63ee07ac /bin/sqfsdiff/src/extract.c | |
parent | 2182129c8f359c4fa1390eaba7a65b595ccd4182 (diff) |
Move library source into src sub-directory
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Diffstat (limited to 'bin/sqfsdiff/src/extract.c')
-rw-r--r-- | bin/sqfsdiff/src/extract.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/bin/sqfsdiff/src/extract.c b/bin/sqfsdiff/src/extract.c new file mode 100644 index 0000000..f2072d4 --- /dev/null +++ b/bin/sqfsdiff/src/extract.c @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * extract.c + * + * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> + */ +#include "sqfsdiff.h" + +static int extract(sqfs_data_reader_t *data, const sqfs_inode_generic_t *inode, + const char *prefix, const char *path, size_t block_size) +{ + char *ptr, *temp; + ostream_t *fp; + + temp = alloca(strlen(prefix) + strlen(path) + 2); + sprintf(temp, "%s/%s", prefix, path); + + ptr = strrchr(temp, '/'); + *ptr = '\0'; + if (mkdir_p(temp)) + return -1; + *ptr = '/'; + + fp = ostream_open_file(temp, OSTREAM_OPEN_OVERWRITE | + OSTREAM_OPEN_SPARSE); + if (fp == NULL) { + perror(temp); + return -1; + } + + if (sqfs_data_reader_dump(path, data, inode, fp, block_size)) { + sqfs_drop(fp); + return -1; + } + + ostream_flush(fp); + sqfs_drop(fp); + return 0; +} + +int extract_files(sqfsdiff_t *sd, const sqfs_inode_generic_t *old, + const sqfs_inode_generic_t *new, + const char *path) +{ + if (old != NULL) { + if (extract(sd->sqfs_old.data, old, "old", + path, sd->sqfs_old.super.block_size)) + return -1; + } + + if (new != NULL) { + if (extract(sd->sqfs_new.data, new, "new", + path, sd->sqfs_new.super.block_size)) + return -1; + } + + return 0; +} |