Implement I_SUID/I_SGID feature for binfs in the POSIX compliant way.
If set-user-ID bit is set in the file permissions, then the effective
user ID of process shall be set to UID of the new process image file.
test case:
hello example emulates to set uid and file set-user-ID bit, and call
geteuid and getegid API.
UID = 2000
GID = 3000
MODE = 06555
nsh> ls -l /bin/hello
-r-sr-sr-x 2000 3000 0 hello
nsh> hello
geteuid:2000
getegid:3000
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
The memory allocated with strdup and asprintf is done via lib_malloc
so we need to use lib_free to deallocate memory otherwise the assertion
"Free memory from the wrong heap" is hit with flat mode and user separated
heap enabled mode.
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
VELAPLATFO-12536
This provides the initial hooks for Flattened Device Tree support
with QEMU RV. It also provides a new procfs file that exposes the
fdt to userspace much like the /sys/firmware/fdt endpoint in Linux.
See https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-firmware-ofw
Nodes in the fdt are not yet usable by the OS.
Signed-off-by: Brennan Ashton <bashton@brennanashton.com>
Signed-off-by: liaoao <liaoao@xiaomi.com>
Both the device and the pipe used the FSNODEFLAG_TYPE_DRIVER type before,
and now add an independent pipe type
Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
In POSIX standard spec https://pubs.opengroup.org/onlinepubs/7908799/xsh/mqueue.h.html, the field type in mq_attr should be long not size_t. And no logical judgment when mq_maxmsg <= 0 or mq_msgsize <= 0. In this change, i update the field type in mq_attr, and add the missing logical judgment.
Signed-off-by: yangjiao <yangjiao@xiaomi.com>
If the shm file is removed and a subsequent close, only release shm
object, but inode is leaked. Should decrease refcount to release inode
when unmapped, that matched with refcount increase when mapped.
Another fix that remove the shm file failed.
nsh> rm /var/shm/pts_mmap_1_2_5
nsh: rm: unlink failed: 6
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
mmap establish a mapping address space that refer to a tmpfs file,
there are two issues:
1. if the tmpfs file is removed and a subsequent close(), tmpfs_close
will release the backend memory object, use after free errors occur
when operating the mapping memory. We add an extra reference to memory object,
memory will be released when there are no more mappings.
2. if unmap only a portion of the memory, fix the bug that adds another map.
Use realloc and shrink the mapping memory instead.
The fix pass LTP posix case mmap/10-1.c and mmap/12-1.c
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
No memory map count limit that will exhaust memory and cause
the system hang. Also that fix pass LTP posix case mmap/24-1.c
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
If MAP_PRIVATE is specified, do not change the underlying object,
that is OK to open file with read-only permission. Change to pass:
testcases/open_posix_testsuite/conformance/interfaces/mmap/6-5.c
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
As posix spec, mmap() function shall fail with ENODEV if fd refers
to a file whose type is not supported. Change to pass ltp open_posix test:
testcases/open_posix_testsuite/conformance/interfaces/mmap/23-1.c
https://pubs.opengroup.org/onlinepubs/9699919799/functions/mmap.html
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
The FIOC_FILEPATH ioctl needs rf->rf_path, which is not initialized for
dup'ed romfs file and cause problems.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
1. command "memdump leak" can dump the leacked memory node;
2. fix the leak memory stat bug in memory manager;
Signed-off-by: wangbowen6 <wangbowen6@xiaomi.com>
since the same function can be achieved by mount:
mount(NULL, "/mnt/unionfs", "unionfs", 0,
"fspath1=/mnt/path1,prefix1=prefix1,"
"fspath2=/mnt/path2,prefix2=prefix2");
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
while iterate throuh all mapping memory to munmap and release,
the last entry is NUlL.
We need differentiate the case with invald entry at the first.
The fix is to pass ltp shm related cases.
Signed-off-by: fangxinyong <fangxinyong@xiaomi.com>
Follow the POSIX specification in https://pubs.opengroup.org/onlinepubs/9699919799/functions/sem_open.html, update the logic for condition that the semaphore name length is greater than PATH_MAX or a component length is greater than NAME_MAX.
Signed-off-by: yangjiao <yangjiao@xiaomi.com>
