mirror of https://github.com/vitalif/e2fsprogs
libext2fs: check return values
Fix up a few places where we ignore return values. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>debian-1.42.9
parent
b2778bcb8c
commit
8d74ab767d
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@ -70,7 +70,7 @@ errcode_t ext2fs_sync_device(int fd, int flushb)
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#warning BLKFLSBUF not defined
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#endif
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#ifdef FDFLUSH
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ioctl (fd, FDFLUSH, 0); /* In case this is a floppy */
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return ioctl(fd, FDFLUSH, 0); /* In case this is a floppy */
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#elif defined(__linux__)
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#warning FDFLUSH not defined
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#endif
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@ -193,6 +193,8 @@ errcode_t ext2fs_create_icount_tdb(ext2_filsys fs, char *tdb_dir,
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uuid_unparse(fs->super->s_uuid, uuid);
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sprintf(fn, "%s/%s-icount-XXXXXX", tdb_dir, uuid);
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fd = mkstemp(fn);
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if (fd < 0)
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return fd;
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/*
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* This is an overestimate of the size that we will need; the
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@ -66,6 +66,7 @@ errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags)
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blk64_t blk;
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ssize_t actual;
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errcode_t retval;
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off_t r;
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buf = malloc(fs->blocksize * BUF_BLOCKS);
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if (!buf)
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@ -97,7 +98,11 @@ errcode_t ext2fs_image_inode_write(ext2_filsys fs, int fd, int flags)
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blk++;
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left--;
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cp += fs->blocksize;
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lseek(fd, fs->blocksize, SEEK_CUR);
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r = lseek(fd, fs->blocksize, SEEK_CUR);
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if (r < 0) {
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retval = errno;
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goto errout;
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}
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continue;
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}
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/* Find non-zero blocks */
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@ -520,8 +520,10 @@ errcode_t ext2fs_add_journal_inode(ext2_filsys fs, blk_t num_blocks, int flags)
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#if HAVE_EXT2_IOCTLS
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fd = open(jfile, O_RDONLY);
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if (fd >= 0) {
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ioctl(fd, EXT2_IOC_SETFLAGS, &f);
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retval = ioctl(fd, EXT2_IOC_SETFLAGS, &f);
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close(fd);
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if (retval)
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return retval;
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}
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#endif
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#endif
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@ -192,6 +192,13 @@ static errcode_t ext2fs_punch_extent(ext2_filsys fs, ext2_ino_t ino,
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retval = ext2fs_extent_open2(fs, ino, inode, &handle);
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if (retval)
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return retval;
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/*
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* Find the extent closest to the start of the punch range. We don't
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* check the return value because _goto() sets the current node to the
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* next-lowest extent if 'start' is in a hole, and doesn't set a
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* current node if there was a real error reading the extent tree.
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* In that case, _get() will error out.
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*/
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ext2fs_extent_goto(handle, start);
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retval = ext2fs_extent_get(handle, EXT2_EXTENT_CURRENT, &extent);
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if (retval)
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