forked from pool/parted
3c3dbf367e
fatresize: Fix getting the device name from partition name (boo#959181) OBS-URL: https://build.opensuse.org/request/show/558622 OBS-URL: https://build.opensuse.org/package/show/Base:System/parted?expand=0&rev=136
74 lines
1.9 KiB
Diff
74 lines
1.9 KiB
Diff
From: Sebastian Parschauer <sparschauer@suse.de>
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Date: Sun, 3 Dec 2017 12:09:44 +0100
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Subject: Fix getting the device name from partition name
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References: boo#959181
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Patch-mainline: submitted, https://github.com/ya-mouse/fatresize/pull/4
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There are many partition device names like e.g. /dev/mmcblk0p1 where
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it is not enough to trim the trailing digits to get the disk device
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name. Using open() here would depend on a POSIX platform. So do it
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like _ped_device_probe() and silence libparted exceptions and try
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to get the device with ped_device_get(). Trim further trailing
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characters until libparted finds it. Print an error and exit if
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the partition name is invalid.
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Fixes #2
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Signed-off-by: Sebastian Parschauer <sparschauer@suse.de>
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---
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fatresize/fatresize.c | 29 +++++++++++++++++++++++++++++
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1 file changed, 29 insertions(+)
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--- a/fatresize/fatresize.c
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+++ b/fatresize/fatresize.c
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@@ -9,6 +9,7 @@
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#include <unistd.h>
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#include <ctype.h>
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+#include <parted/parted.h>
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#include <parted/device.h>
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#include <parted/filesys.h>
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@@ -79,6 +80,18 @@ resize(const char* disk_device, int part
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}
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+/* Code parts have been taken from _ped_device_probe(). */
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+static void
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+probe_device(PedDevice **dev, const char *path)
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+{
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+ ped_exception_fetch_all();
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+ *dev = ped_device_get(path);
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+ if (!*dev)
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+ ped_exception_catch();
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+ ped_exception_leave_all();
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+}
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+
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+
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int
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main(int argc, char** argv)
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{
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@@ -126,6 +139,22 @@ main(int argc, char** argv)
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disk_device = strndup(argv[1], pos - argv[1] + 1);
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partition_number = strtol(pos + 1, NULL, 10);
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+ PedDevice *peddev = NULL;
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+ /* check if the device really exists */
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+ while (pos != argv[1] && *pos != '/' && !peddev)
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+ {
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+ disk_device[pos - argv[1] + 1] = '\0';
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+ probe_device(&peddev, disk_device);
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+ --pos;
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+ }
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+ if (!peddev)
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+ {
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+ free(disk_device);
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+ fprintf(stderr, "invalid device\n");
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+ exit(EXIT_FAILURE);
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+ }
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+ ped_device_destroy(peddev);
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+
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if (argc == 3)
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{
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char* endptr = NULL;
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