Commit Graph

77 Commits

Author SHA1 Message Date
guoshichao
3524f4b9ce libs/libc/fork: add lib_fork implementation
1. add lib_fork api in libs/libc, we need a fork() api to implement the
fork relative method, such as pthread_atfork
2. rename the assembly fork entry function name to up_fork(), and rename
the up_fork() to arch specific name, such as
sim_fork()/arm_fork()/mips_fork() etc.

Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2023-07-26 10:41:52 +02:00
guoshichao
c33d1c9c97 sched/task/fork: add fork implementation
1. as we can use fork to implement vfork, so we rename the vfork to
fork, and use the fork method as the base to implement vfork method
2. create the vfork function as a libc function based on fork
function

Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2023-07-12 02:27:37 +08:00
Petro Karashchenko
b8d3e32bdf sched/clock: move clock_getcpuclockid() and clock_getres() to libc
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
2023-07-07 17:39:39 -03:00
Gregory Nutt
8868c58720 Fix Deadloop in VFS if CONFIG_CANCELLATION_POINTS is enabled
If cancellation points are enabled, then the following logic is activated in sem_wait().  This causes ECANCELED to be returned every time that sem_wait is called.

    int sem_wait(FAR sem_t *sem)
    {
      ...

      /* sem_wait() is a cancellation point */

      if (enter_cancellation_point())
        {
    #ifdef CONFIG_CANCELLATION_POINTS
          /* If there is a pending cancellation, then do not perform
           * the wait.  Exit now with ECANCELED.
           */

          errcode = ECANCELED;
          goto errout_with_cancelpt;
    #endif
        }
      ...

Normally this works fine.  sem_wait() is the OS API called by the application and will cancel the thread just before it returns to the application.  Since it is cancellation point, it should never be called from within the OS.

There there is is one perverse cases where sem_wait() may be nested within another cancellation point.  If open() is called, it will attempt to lock a VFS data structure and will eventually call nxmutex_lock().  nxmutex_lock() waits on a semaphore:

   int nxmutex_lock(FAR mutex_t *mutex)
   {
     ...

     for (; ; )
       {
         /* Take the semaphore (perhaps waiting) */

         ret = _SEM_WAIT(&mutex->sem);
         if (ret >= 0)
           {
             mutex->holder = _SCHED_GETTID();
             break;
           }

         ret = _SEM_ERRVAL(ret);
         if (ret != -EINTR && ret != -ECANCELED)
           {
             break;
           }
       }
   ...
}

In the FLAT build, _SEM_WAIT expands to sem_wait().  That causes the error in the logic:  It should always expand to nxsem_wait().  That is because sem_wait() is cancellation point and should never be called from with the OS or the C library internally.

The failure occurs because the cancellation point logic in sem_wait() returns -ECANCELED (via _SEM_ERRVAL) because sem_wait() is nested; it needs to return the -ECANCELED error to the outermost cancellation point which is open() in this case.  Returning -ECANCELED then causes an infinite loop to occur in nxmutex_lock().

The correct behavior in this case is to call nxsem_wait() instead of sem_wait().  nxsem_wait() is identical to sem_wait() except that it is not a cancelation point.  It will return -ECANCELED if the thread is canceled, but only once.  So no infinite loop results.

In addition, an nxsem_wait() system call was added to support the call from nxmutex_lock().

This resolves Issue #9695
2023-07-06 14:20:29 -03:00
guoshichao
bc084a8505 sched/clock/clock_getcpuclockid: add clock_getcpuclockid implementation
1. the implementation can pass the full
ltp/open_posix_testsuite/clock_getcpuclockid testcases
2. the modification are referred to https://pubs.opengroup.org/onlinepubs/9699919799/functions/clock_getcpuclockid.html

Signed-off-by: guoshichao <guoshichao@xiaomi.com>
2023-07-05 00:32:11 +08:00
zhangyuan21
884be2bdb9 assert: Distinguish between assert and exception
CURRENT_REGS may change during assert handling, so pass
in the 'regs' parameter at the entry point of _assert.

Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
2023-05-03 14:49:32 +08:00
hujun5
d189a86a35 system: pthread_barrierwait should be moved to kernel space
The current implementation requires the use of enter_critical_section, so the source code needs to be moved to kernel space

Signed-off-by: hujun5 <hujun5@xiaomi.com>
2023-04-25 15:34:40 +08:00
chao an
3c58f5db2b syscall/libc: add more syscall/libc symbols into csv file
Signed-off-by: chao an <anchao@xiaomi.com>
2023-03-31 21:56:50 +09:00
Xiang Xiao
a3a1883787 fs: Don't guard rename with CONFIG_DISABLE_MOUNTPOINT
since the pseudo root fs support rename too

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-02-14 11:24:37 +08:00
Xiang Xiao
4009cb1970 fs: Don't guard ftruncate with CONFIG_DISABLE_MOUNTPOINT
since ftruncate depends on file_operations not mountpt_operations

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-02-14 11:24:37 +08:00
Xiang Xiao
a05f9aaa85 fs: Don't guard fsync with CONFIG_DISABLE_MOUNTPOINT
since the driver can also support fsync by implementing BIOC_FLUSH

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-02-14 11:24:37 +08:00
dongjiuzhu1
63e6f80fb0 sync: add sync api
Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
2023-02-07 12:15:05 +02:00
Stuart Ianna
a2a542562f fs: Implment link as a normal function instead macro
so "using ::link;" can pass the compiling. This change also
simplify the implementation of the hard link in the future.
2023-02-04 18:31:23 -03:00
Zhe Weng
8819eeaf15 net: Implement shutdown() interface and tcp shutdown
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
2023-01-31 11:15:01 +08:00
Xiang Xiao
819fbd22cc sched: Implement tkill/tgkill
https://linux.die.net/man/2/tgkill

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-01-26 08:11:56 +02:00
Xiang Xiao
43e7b13697 assert: Log the assertion expression in case of fail
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-01-24 15:00:19 -03:00
Jukka Laitinen
b09581f736 Add shm_open and shm_unlink to syscalls
Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
2023-01-18 11:01:20 +08:00
Xiang Xiao
695f42f8d2 net: Move accept to libc after https://github.com/apache/nuttx/pull/8083
since accept can simply forward to kernel accept4 function

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-01-13 11:23:42 +02:00
zhanghongyu
48c9d10336 net_socket: add accept4 function
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
2023-01-11 23:28:08 +08:00
Jukka Laitinen
0a885da434 syscall: Always add munmap into syscalls
Munmap interface is always enabled just like mmap is

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
2023-01-11 03:11:11 +08:00
Ville Juven
2ed51d026c fs/streams: Move the file streams from the group structure into TLS
This is preparation for flushing streams from user space, like it should
be done.

- Move tg_streamlist (group, kernel space) ->
       ta_streamlist (TLS, user space)
- Access stream list via tg_info in kernel
- Access stream list via TLS in user space
- Remove / rename nxsched_get_streams -> lib_getstreams
- Remove system call for nxsched_get_streams
2022-12-22 20:16:11 +08:00
田昕
2719869ab2 Move _assert to kernel space.
Signed-off-by: 田昕 <tianxin7@xiaomi.com>
2022-12-06 18:33:21 +08:00
Michael Jung
b401db5ca4 prctl syscall is present unconditionally
I had a link problem regarding prctl while CONFIG_TASK_NAME_SIZE was
defined 0 and building in protected mode.  Turns out in monolithic
build prctl is present no matter what CONFIG_TASK_NAME_SIZE, but in
protected mode build its only present if CONFIG_TASK_NAME_SIZE > 0.
So, bring protected mode build in sync with the monolithic one.

Signed-off-by: Michael Jung <michael.jung@secore.ly>
2022-11-09 01:21:16 +08:00
Xiang Xiao
19bded4738 fs: Remove the unused nx_pipe to prefer file_pipe for kernel
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-10-27 23:14:25 +02:00
Jiuzhu Dong
aeec797511 syscall: remove directory syscall
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
2022-08-10 13:33:08 +08:00
Masayuki Ishikawa
d96c87f666 syscall: Add socketpair to syscall.csv
Summary:
- This commit adds socketpair to syscall.csv

Impact:
- None

Testing:
- Tested with adb (not merged net)

Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
2022-07-15 13:31:58 +08:00
Ville Juven
ba4277bb13 syscall: Remove exit() call gate
exit() is a userspace function, no need for call gate
2022-06-20 14:14:28 +03:00
Ville Juven
a54c3d13f9 sched: Remove SCHED_ATEXIT / SCHED_ONEXIT
Remove the kernel side implementations altogether. These will be
replaced by user land implementations.
2022-05-25 15:28:43 +08:00
Ville Juven
5bcd1dbb64 sched: Remove task_restart in case of CONFIG_BUILD_KERNEL
Same treatment as task_delete, this is not usable in kernel build
either.
2022-05-12 22:08:19 +08:00
Ville Juven
b1d92159fa sched: Remove task_delete in case of CONFIG_BUILD_KERNEL
Deleting a task from another task's context will not do, so shut
this gate down for BUILD_KERNEL. In this case if a task wants another
task to terminate, it must ask the other task to politely kill itself.

Note: kthreads still need this, also, the kernel can delete a task
without asking.
2022-05-12 03:27:25 +08:00
Xiang Xiao
55b5561fdb sched/task: Implement execle and execve
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-04-22 10:40:31 +03:00
Ville Juven
d6ef4849a9 syscall: Add call gate for get_environ_ptr
Now that the environment strings are stored as an array of strings,
they can be passed from the application via char **environ, which
is really defined as a function call to get_environ_ptr().

This works as is for flat build, but protected mode and kernel mode
require a call gate, which is added here.
2022-04-21 18:38:37 +08:00
Huang Qi
e516c6247e sched: Implement task local storage
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2022-02-23 22:05:02 +08:00
Huang Qi
c0a0de97ce Revert "libc: Call pthread_exit in user-space by up_pthread_exit"
This reverts commit f4a0b7aedd.

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2022-02-09 21:21:43 +08:00
Xiang Xiao
0000e61da6 task: Always implement posix_spawnp as macro
Since there is no benefit to implement it as
function when CONFIG_LIBC_ENVPATH equals y

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-02-09 20:09:11 +08:00
Xiang Xiao
ab3b0d0162 sched: Implement sysinfo function
specify here:
https://man7.org/linux/man-pages/man2/sysinfo.2.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-02-08 10:27:38 +08:00
Xiang Xiao
86684105f9 serial: Move tcdrain implementation from drivers/serial to libc
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-12-29 08:11:08 -03:00
Xiang Xiao
dd942f0b04 sched/backtrace: Dump the complete stack regardless the depth
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-12-29 12:09:54 +08:00
Petro Karashchenko
d445282566 fs/vfs: Add file descriptor based timers support
Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
2021-12-20 04:00:20 -06:00
Xiang Xiao
c562263205 net: Move if_nametoindex and if_indextoname to libc
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-12-19 10:08:57 -06:00
chao.an
1060953567 sched/backtrace: add sched_backtrace support
Signed-off-by: chao.an <anchao@xiaomi.com>
2021-08-19 01:30:50 -07:00
Xiang Xiao
6c61d032db fs: Add utimens and lutimens
https://pubs.opengroup.org/onlinepubs/9699919799/functions/futimens.html
https://www.daemon-systems.org/man/utimens.2.html

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-08-09 17:55:44 -03:00
Xiang Xiao
b12f588140 Rename CONFIG_LIB_BOARDCTL to CONFIG_BOARDCTL
since boardctl isn't a libc feature

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-08-06 13:58:26 +02:00
Xiang Xiao
5025fbef8d Rename LIB_ to LIBC_ for all libc Kconfig
follow other libc component naming convention

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-08-05 19:45:24 +02:00
Xiang Xiao
307cc61893 fs: Add fchstat and chstat callback into mountpt_operations
and implement all status related change function. the individual
file system change will provide in other upcoming patchset.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I8fde9db8eba9586e9c8da078b67e020c26623cf4
2021-07-29 06:33:49 -03:00
Xiang Xiao
663104a2e9 fs: Simplify sendfile implementation
and avoid call nx_ file API in the kernel space

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Id951ca161df2c2ee267dc4b5a0d7dfa67df4c1e6
2021-07-17 07:39:15 -03:00
Huang Qi
50c08bf45b libc: Move pthread_key_destructor to task_info_s
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2021-07-04 07:36:44 -05:00
YAMAMOTO Takashi
b3e8535ad6 Revert "tls: Move pthread key destructor to libc"
This reverts commit cc514d7791.

* It introduced a regression.
  https://github.com/apache/incubator-nuttx/issues/3868

* It seems conceptually wrong to have per-process data in
  the main thread's stack.
2021-06-09 07:59:44 -05:00
Huang Qi
cc514d7791 tls: Move pthread key destructor to libc
Signed-off-by: Huang Qi <huangqi3@xiaomi.com>
2021-06-06 15:25:56 -06:00
Xiang Xiao
ae216cf9e9 sched/task: Simplify the syscall handling of task_spawn
It's better to save one argument by returning pid directly.
This change also follow the convention of task_create.
BTW, it is reasonable to adjust the function prototype a
little bit from both implementation and consistency since
task_spawn is NuttX specific API.

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2021-06-01 12:45:10 +09:00