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ddcc8f9f4e
Add minimalistic tool to allow releasing /dev/fit* devices which is needed on sysupgrade when using the fitblk driver. The package is hidden in menuconfig, it should only be selected by adding it to the default package selection of boards using it. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
46 lines
814 B
C
46 lines
814 B
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <linux/fitblk.h>
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static int fitblk_release(char *device)
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{
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int fd, ret;
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fd = open(device, O_RDONLY);
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if (fd == -1)
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return errno;
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ret = ioctl(fd, FITBLK_RELEASE, NULL);
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close(fd);
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if (ret == -1)
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return errno;
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return 0;
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}
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int main(int argc, char *argp[])
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{
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int ret;
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if (argc != 2) {
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fprintf(stderr, "Release uImage.FIT sub-image block device\n");
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fprintf(stderr, "Syntax: %s /dev/fitXXX\n", argp[0]);
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return -EINVAL;
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}
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ret = fitblk_release(argp[1]);
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if (ret)
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fprintf(stderr, "fitblk: error releasing %s: %s\n", argp[1],
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strerror(ret));
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else
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fprintf(stderr, "fitblk: %s released\n", argp[1]);
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return ret;
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}
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