From: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
In case of embedded devices, where /etc/ is mounted as 'read-only'.
We donot have the /etc/mtab file. So, checking if the device is already
mounted from this file is not sufficient.
Try to read /proc/mounts in case of failure from /etc/mtab.
Issue logs:
/dev/sdb4 /mnt vfat rw,relatime,fmask=0022,dmask=0022,codepage=cp437,
iocharset=ascii,errors=remount-ro 0 0
Here device - sb4 is already mounted.
But, when trying to format using mkfs.f2fs
F2FS-tools: Ver: 1.1.0 (2013-01-14)
Info: sector size = 512
Info: total sectors = 13108784 (in 512bytes)
WARN: Align start sector number in a unit of pages
i.e., start sector: 2542124, ofs:4 (sectors per page: 8)
Info: zone aligned segment0 blkaddr: 186
Info: This device doesn't support TRIM
Info: format successful
After Change:
F2FS-tools: Ver: 1.1.0 (2013-01-14)
Error: /dev/sdb4 is already mounted
Signed-off-by: Namjae Jeon <namjae.jeon@xxxxxxxxxxx>
Signed-off-by: Amit Sahrawat <a.sahrawat@xxxxxxxxxxx>
---
lib/libf2fs.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/lib/libf2fs.c b/lib/libf2fs.c
index 37ed147..d228492 100644
--- a/lib/libf2fs.c
+++ b/lib/libf2fs.c
@@ -152,8 +152,13 @@ int f2fs_dev_is_mounted(struct f2fs_configuration *c)
struct mntent *mnt = NULL;
file = setmntent(MOUNTED, "r");
- if (file == NULL)
- return 0;
+ if (file == NULL) {
+ /* if failed due to /etc/mtab file not present
+ try with /proc/mounts */
+ file = setmntent("/proc/mounts", "r");
+ if (file == NULL)
+ return 0;
+ }
while (1) {
mnt = getmntent(file);
--
1.7.9.5
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