Merge pull request #5259 from mysterywolf/posix

[posix] 优化posix若干

22 files changed, 129 insertions, 161 deletions

diff --git a/components/dfs/Kconfig b/components/dfs/Kconfig
index 7a4fbb655d..1ec36784d7 100644
--- a/components/dfs/Kconfig
+++ b/components/dfs/Kconfig
@@ -133,7 +133,7 @@ if RT_USING_DFS
 
     config RT_USING_DFS_DEVFS
         bool "Using devfs for device objects"
-        default y
+        default n
 
     config RT_USING_DFS_ROMFS
         bool "Enable ReadOnly file system on flash"
diff --git a/components/dfs/include/dfs_fs.h b/components/dfs/include/dfs_fs.h
index 3d194515df..0a13040c21 100644
--- a/components/dfs/include/dfs_fs.h
+++ b/components/dfs/include/dfs_fs.h
@@ -12,10 +12,9 @@
 #define __DFS_FS_H__
 
 #include <dfs.h>
-#ifdef RT_USING_LIBC
 #include <sys/types.h>
-#endif
 #include <sys/errno.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
diff --git a/components/dfs/src/dfs.c b/components/dfs/src/dfs.c
index ed8d8094aa..29b2068a6c 100644
--- a/components/dfs/src/dfs.c
+++ b/components/dfs/src/dfs.c
@@ -18,9 +18,9 @@
 #include <lwp.h>
 #endif
 
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
 #include <libc.h>
-#endif /* RT_USING_POSIX */
+#endif /* RT_USING_POSIX_STDIO */
 
 /* Global variables */
 const struct dfs_filesystem_ops *filesystem_operation_table[DFS_FILESYSTEM_TYPES_MAX];
@@ -216,10 +216,10 @@ struct dfs_fd *fd_get(int fd)
     struct dfs_fd *d;
     struct dfs_fdtable *fdt;
 
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
     if ((0 <= fd) && (fd <= 2))
         fd = libc_stdio_get_console();
-#endif /* RT_USING_POSIX */
+#endif /* RT_USING_POSIX_STDIO */
 
     fdt = dfs_fdtable_get();
     fd = fd - DFS_FD_OFFSET;
diff --git a/components/finsh/shell.c b/components/finsh/shell.c
index 6938ed1f24..c2f6e2a550 100644
--- a/components/finsh/shell.c
+++ b/components/finsh/shell.c
@@ -146,7 +146,7 @@ int finsh_getchar(void)
 {
 #ifdef RT_USING_DEVICE
     char ch = 0;
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
     if(read(STDIN_FILENO, &ch, 1) > 0)
     {
         return ch;
@@ -170,14 +170,14 @@ int finsh_getchar(void)
         rt_sem_take(&shell->rx_sem, RT_WAITING_FOREVER);
 
     return ch;
-#endif /* RT_USING_POSIX */
+#endif /* RT_USING_POSIX_STDIO */
 #else
     extern char rt_hw_console_getchar(void);
     return rt_hw_console_getchar();
 #endif /* RT_USING_DEVICE */
 }
 
-#if !defined(RT_USING_POSIX) && defined(RT_USING_DEVICE)
+#if !defined(RT_USING_POSIX_STDIO) && defined(RT_USING_DEVICE)
 static rt_err_t finsh_rx_ind(rt_device_t dev, rt_size_t size)
 {
     RT_ASSERT(shell != RT_NULL);
@@ -241,7 +241,7 @@ const char *finsh_get_device()
     RT_ASSERT(shell != RT_NULL);
     return shell->device->parent.name;
 }
-#endif
+#endif /* !defined(RT_USING_POSIX_STDIO) && defined(RT_USING_DEVICE) */
 
 /**
  * @ingroup finsh
@@ -443,7 +443,7 @@ void finsh_thread_entry(void *parameter)
     shell->echo_mode = 0;
 #endif
 
-#if !defined(RT_USING_POSIX) && defined(RT_USING_DEVICE)
+#if !defined(RT_USING_POSIX_STDIO) && defined(RT_USING_DEVICE)
     /* set console device as shell device */
     if (shell->device == RT_NULL)
     {
@@ -453,7 +453,7 @@ void finsh_thread_entry(void *parameter)
             finsh_set_device(console->parent.name);
         }
     }
-#endif
+#endif /* !defined(RT_USING_POSIX_STDIO) && defined(RT_USING_DEVICE) */
 
 #ifdef FINSH_USING_AUTH
     /* set the default password when the password isn't setting */
diff --git a/components/finsh/shell.h b/components/finsh/shell.h
index 985d3b3fbd..d421f60374 100644
--- a/components/finsh/shell.h
+++ b/components/finsh/shell.h
@@ -78,7 +78,7 @@ struct finsh_shell
     rt_uint16_t line_position;
     rt_uint16_t line_curpos;
 
-#if !defined(RT_USING_POSIX) && defined(RT_USING_DEVICE)
+#if !defined(RT_USING_POSIX_STDIO) && defined(RT_USING_DEVICE)
     rt_device_t device;
 #endif
 
diff --git a/components/libc/Kconfig b/components/libc/Kconfig
index b2af15e841..4506001d42 100644
--- a/components/libc/Kconfig
+++ b/components/libc/Kconfig
@@ -10,8 +10,8 @@ if RT_USING_LIBC
 
     config RT_LIBC_USING_FILEIO
         bool "Enable libc with file operation, eg.fopen/fwrite/fread/getchar"
-        select RT_USING_DFS
         select RT_USING_POSIX
+        select RT_USING_POSIX_STDIO
         default n
 
     config RT_USING_MODULE
@@ -37,40 +37,59 @@ config RT_LIBC_DEFAULT_TIMEZONE
     range -12 12
     default 8
 
-config RT_USING_PTHREADS
-    bool "Enable pthreads APIs"
+config RT_USING_POSIX
+    bool "Enable basic POSIX layer, open/read/write/close etc"
+    select RT_USING_DFS
     default n
 
-if RT_USING_PTHREADS
-    config PTHREAD_NUM_MAX
-        int "Maximum number of pthreads"
-        default 8
-endif
-
-if RT_USING_DFS
-    config RT_USING_POSIX
-        bool "Enable POSIX layer, open/read/write/select etc"
+if RT_USING_POSIX
+    config RT_USING_POSIX_STDIO
+        bool "Enable standard I/O"
+        select RT_USING_DFS
         select RT_USING_DFS_DEVFS
-        default y
+        default n
 
-    if RT_USING_POSIX
-        config RT_USING_POSIX_MMAP
-            bool "Enable mmap() API"
-            default n
+    config RT_USING_POSIX_POLL
+        bool "Enable poll()"
+        select RT_USING_DFS
+        default n
 
-        config RT_USING_POSIX_TERMIOS
-            bool "Enable termios APIs"
-            default n
+    config RT_USING_POSIX_SELECT
+        bool "Enable select()"
+        select RT_USING_DFS
+        select RT_USING_POSIX_POLL
+        default n
 
-        config RT_USING_POSIX_GETLINE
-            bool "Enable getline()/getdelim() APIs"
-            default n
+    config RT_USING_POSIX_DELAY
+        bool "Enable delay functions"
+        default n
 
-        config RT_USING_POSIX_AIO
-            bool "Enable AIO"
-            default n
-    endif
+    config RT_USING_POSIX_GETLINE
+        bool "Enable getline()/getdelim() APIs"
+        default n
+
+    config RT_USING_POSIX_MMAP
+        bool "Enable mmap() API"
+        select RT_USING_DFS
+        default n
+
+    config RT_USING_POSIX_TERMIOS
+        bool "Enable termios APIs"
+        default n
 
+    config RT_USING_POSIX_AIO
+        bool "Enable AIO"
+        default n
+endif
+
+config RT_USING_PTHREADS
+    bool "Enable pthreads APIs"
+    default n
+
+if RT_USING_PTHREADS
+    config PTHREAD_NUM_MAX
+        int "Maximum number of pthreads"
+        default 8
 endif
 
 endmenu
diff --git a/components/libc/compilers/armlibc/syscalls.c b/components/libc/compilers/armlibc/syscalls.c
index 755ffef1a6..62657a4b64 100644
--- a/components/libc/compilers/armlibc/syscalls.c
+++ b/components/libc/compilers/armlibc/syscalls.c
@@ -21,7 +21,7 @@
 #include <fcntl.h>
 #include <unistd.h>
 #include <sys/stat.h>
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
 #include "libc.h"
 #endif
 
@@ -144,7 +144,7 @@ int _sys_close(FILEHANDLE fh)
  */
 int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
 {
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
     int size;
 
     if (fh == STDIN)
@@ -169,7 +169,7 @@ int _sys_read(FILEHANDLE fh, unsigned char *buf, unsigned len, int mode)
         return 0; /* error */
 #else
     return 0; /* error */
-#endif /* RT_USING_POSIX */
+#endif /* RT_USING_POSIX_STDIO */
 }
 
 /*
@@ -185,7 +185,7 @@ int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode)
 
     if ((fh == STDOUT) || (fh == STDERR))
     {
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
         if (libc_stdio_get_console() < 0)
         {
             LOG_W("Do not invoke standard input before initializing libc");
@@ -200,7 +200,7 @@ int _sys_write(FILEHANDLE fh, const unsigned char *buf, unsigned len, int mode)
         }
 
         return 0; /* error */
-#endif /* RT_USING_POSIX */
+#endif /* RT_USING_POSIX_STDIO */
     }
     else if (fh == STDIN)
     {
@@ -325,7 +325,7 @@ int fputc(int c, FILE *f)
 
 int fgetc(FILE *f)
 {
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
     char ch;
 
     if (libc_stdio_get_console() < 0)
@@ -336,7 +336,7 @@ int fgetc(FILE *f)
 
     if(read(STDIN_FILENO, &ch, 1) == 1)
         return ch;
-#endif /* RT_USING_POSIX */
+#endif /* RT_USING_POSIX_STDIO */
     return 0; /* error */
 }
 
diff --git a/components/libc/compilers/dlib/syscall_read.c b/components/libc/compilers/dlib/syscall_read.c
index 74cedb966a..c926c577b5 100644
--- a/components/libc/compilers/dlib/syscall_read.c
+++ b/components/libc/compilers/dlib/syscall_read.c
@@ -11,7 +11,7 @@
 #include <rtthread.h>
 #include <yfuns.h>
 #include <unistd.h>
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
 #include "libc.h"
 #endif
 
@@ -22,7 +22,7 @@
 #pragma module_name = "?__read"
 size_t __read(int handle, unsigned char *buf, size_t len)
 {
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
     int size;
 
     if (handle == _LLIO_STDIN)
diff --git a/components/libc/compilers/dlib/syscall_write.c b/components/libc/compilers/dlib/syscall_write.c
index ab011c1096..72bac6ba49 100644
--- a/components/libc/compilers/dlib/syscall_write.c
+++ b/components/libc/compilers/dlib/syscall_write.c
@@ -11,7 +11,7 @@
 #include <rtthread.h>
 #include <yfuns.h>
 #include <unistd.h>
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
 #include "libc.h"
 #endif
 
@@ -29,7 +29,7 @@ size_t __write(int handle, const unsigned char *buf, size_t len)
 
     if ((handle == _LLIO_STDOUT) || (handle == _LLIO_STDERR))
     {
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
         if (libc_stdio_get_console() < 0)
         {
             LOG_W("Do not invoke standard output before initializing libc");
diff --git a/components/libc/compilers/gcc/newlib/syscalls.c b/components/libc/compilers/gcc/newlib/syscalls.c
index f95e695a85..e957aaf003 100644
--- a/components/libc/compilers/gcc/newlib/syscalls.c
+++ b/components/libc/compilers/gcc/newlib/syscalls.c
@@ -20,7 +20,7 @@
 #include <unistd.h>
 #include <sys/errno.h>
 #include <sys/stat.h>
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
 #include "libc.h"
 #endif
 #ifdef RT_USING_MODULE
@@ -216,7 +216,7 @@ int _open_r(struct _reent *ptr, const char *file, int flags, int mode)
 
 _ssize_t _read_r(struct _reent *ptr, int fd, void *buf, size_t nbytes)
 {
-#ifdef RT_USING_POSIX
+#ifdef RT_USING_POSIX_STDIO
     _ssize_t rc;
     if (libc_stdio_get_console() < 0 && fd == STDIN_FILENO)
     {
@@ -271,11 +271,13 @@ _ssize_t _write_r(struct _reent *ptr, int fd, const void *buf, size_t nbytes)
 {
 #ifdef RT_USING_POSIX
     _ssize_t rc;
+#ifdef RT_USING_POSIX_STDIO
     if (libc_stdio_get_console() < 0 && fd == STDOUT_FILENO)
     {
         LOG_W("Do not invoke standard output before initializing libc");
         return 0;
     }
+#endif /* RT_USING_POSIX_STDIO */
     rc = write(fd, buf, nbytes);
     return rc;
 #elif defined(RT_USING_CONSOLE)
diff --git a/components/libc/compilers/readme.md b/components/libc/compilers/readme.md
new file mode 100644
index 0000000000..e376cc704f
--- /dev/null
+++ b/components/libc/compilers/readme.md
@@ -0,0 +1 @@
+This folder provides uniformed header files crossing different compiler platforms, and supports basic standard C library functions, such as memory management and time management, etc.
\ No newline at end of file
diff --git a/components/libc/posix/mmap/SConscript b/components/libc/posix/mmap/SConscript
deleted file mode 100644
index fd5b2b953e..0000000000
--- a/components/libc/posix/mmap/SConscript
+++ /dev/null
@@ -1,13 +0,0 @@
-# RT-Thread building script for component
-
-from building import *
-
-cwd = GetCurrentDir()
-src = Glob('*.c') + Glob('*.cpp')
-CPPPATH = [cwd]
-
-group = DefineGroup('POSIX', src,
-    depend = ['RT_USING_DFS', 'RT_USING_POSIX_MMAP'],
-    CPPPATH = CPPPATH)
-
-Return('group')
diff --git a/components/libc/posix/readme.md b/components/libc/posix/readme.md
new file mode 100644
index 0000000000..787b9ddefa
--- /dev/null
+++ b/components/libc/posix/readme.md
@@ -0,0 +1 @@
+This folder provides functions that are not part of the standard C library but are part of the POSIX.1 (IEEE Standard 1003.1) standard.
\ No newline at end of file
diff --git a/components/libc/posix/src/SConscript b/components/libc/posix/src/SConscript
index f338b52cec..0f5d0e9911 100644
--- a/components/libc/posix/src/SConscript
+++ b/components/libc/posix/src/SConscript
@@ -1,12 +1,22 @@
+# RT-Thread building script for component
+
 from building import *
-Import('rtconfig')
 
-src     = Glob('*.c')
+src     = ['unistd.c', 'delay.c']
 cwd     = GetCurrentDir()
 CPPPATH = [cwd]
 
-if rtconfig.ARCH == 'sim': # the vs simulator does not support select and poll
-    SrcRemove(src, ['select.c', 'poll.c'])
+if GetDepend('RT_USING_POSIX_STDIO'):
+    src += ['libc.c']
+
+if GetDepend('RT_USING_POSIX_POLL'):
+    src += ['poll.c']
+
+if GetDepend('RT_USING_POSIX_SELECT'):
+    src += ['select.c']
+
+if GetDepend('RT_USING_POSIX_MMAP'):
+    src += ['mmap.c']
 
 group = DefineGroup('POSIX', src, depend = ['RT_USING_POSIX'], CPPPATH = CPPPATH)
 
diff --git a/components/libc/posix/src/delay.c b/components/libc/posix/src/delay.c
index 1638caafbf..c8564dc54e 100644
--- a/components/libc/posix/src/delay.c
+++ b/components/libc/posix/src/delay.c
@@ -7,6 +7,7 @@
  * Date           Author       Notes
  * 2021-05-07     Meco Man     first Version
  */
+#include <sys/types.h>
 #include <rtthread.h>
 #include <rthw.h>
 #define DBG_TAG    "POSIX.delay"
@@ -48,3 +49,38 @@ void ndelay(unsigned long nsecs)
     rt_hw_us_delay(1);
 }
 RTM_EXPORT(ndelay);
+
+unsigned int sleep(unsigned int seconds)
+{
+    if (rt_thread_self() != RT_NULL)
+    {
+        ssleep(seconds);
+    }
+    else /* scheduler has not run yet */
+    {
+        while(seconds > 0)
+        {
+            udelay(1000000u);
+            seconds --;
+        }
+    }
+
+    return 0;
+}
+RTM_EXPORT(sleep);
+
+int usleep(useconds_t usec)
+{
+    if (rt_thread_self() != RT_NULL)
+    {
+        msleep(usec / 1000u);
+    }
+    else  /* scheduler has not run yet */
+    {
+        udelay(usec / 1000u);
+    }
+    udelay(usec % 1000u);
+
+    return 0;
+}
+RTM_EXPORT(usleep);
diff --git a/components/libc/posix/mmap/posix_mmap.c b/components/libc/posix/src/mmap.c
index e68b82e640..e68b82e640 100644
--- a/components/libc/posix/mmap/posix_mmap.c
+++ b/components/libc/posix/src/mmap.c
diff --git a/components/libc/posix/src/poll.c b/components/libc/posix/src/poll.c
index 2109fb310b..0c773b306c 100644
--- a/components/libc/posix/src/poll.c
+++ b/components/libc/posix/src/poll.c
@@ -14,8 +14,6 @@
 #include <dfs_file.h>
 #include <poll.h>
 
-#ifdef RT_USING_POSIX
-
 struct rt_poll_node;
 
 struct rt_poll_table
@@ -226,5 +224,3 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout)
 
     return num;
 }
-
-#endif
diff --git a/components/libc/posix/src/select.c b/components/libc/posix/src/select.c
index 25cda0f0d1..55d320e921 100644
--- a/components/libc/posix/src/select.c
+++ b/components/libc/posix/src/select.c
@@ -11,8 +11,6 @@
 #include <poll.h>
 #include <sys/select.h>
 
-#ifdef RT_USING_POSIX
-
 static void fdszero(fd_set *set, int nfds)
 {
     fd_mask *m;
@@ -176,5 +174,3 @@ int select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struc
 
     return ret;
 }
-
-#endif
diff --git a/components/libc/posix/src/unistd.c b/components/libc/posix/src/unistd.c
index ef2df2c2fe..85235965ea 100644
--- a/components/libc/posix/src/unistd.c
+++ b/components/libc/posix/src/unistd.c
@@ -13,7 +13,6 @@
 #include <dfs_private.h>
 #include <sys/errno.h>
 #include <unistd.h>
-#include <delay.h>
 
 /**
  * this function is a POSIX compliant version, which will open a file and
@@ -965,80 +964,3 @@ char *ttyname(int fd)
     return "/dev/tty"; /* TODO: need to add more specific */
 }
 RTM_EXPORT(ttyname);
-
-unsigned int sleep(unsigned int seconds)
-{
-    if (rt_thread_self() != RT_NULL)
-    {
-        ssleep(seconds);
-    }
-    else /* scheduler has not run yet */
-    {
-        while(seconds > 0)
-        {
-            udelay(1000000u);
-            seconds --;
-        }
-    }
-
-    return 0;
-}
-RTM_EXPORT(sleep);
-
-int usleep(useconds_t usec)
-{
-    if (rt_thread_self() != RT_NULL)
-    {
-        msleep(usec / 1000u);
-    }
-    else  /* scheduler has not run yet */
-    {
-        udelay(usec / 1000u);
-    }
-    udelay(usec % 1000u);
-
-    return 0;
-}
-RTM_EXPORT(usleep);
-
-pid_t gettid(void)
-{
-    /*TODO*/
-    return 0;
-}
-
-pid_t getpid(void)
-{
-    return gettid();
-}
-RTM_EXPORT(getpid);
-
-pid_t getppid(void)
-{
-    return 0;
-}
-RTM_EXPORT(getppid);
-
-uid_t getuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getuid);
-
-uid_t geteuid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(geteuid);
-
-gid_t getgid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getgid);
-
-gid_t getegid(void)
-{
-    return 0; /*ROOT*/
-}
-RTM_EXPORT(getegid);
diff --git a/components/lwp/Kconfig b/components/lwp/Kconfig
index 1b37829935..3e1982001e 100644
--- a/components/lwp/Kconfig
+++ b/components/lwp/Kconfig
@@ -1,6 +1,7 @@
 config RT_USING_LWP
     bool "Using light-weight process"
-    select RT_USING_DFS
+    select RT_USING_POSIX
+    select RT_USING_POSIX_SELECT
     select RT_USING_LIBC
     depends on ARCH_ARM_CORTEX_M || ARCH_ARM_ARM9 || ARCH_ARM_CORTEX_A
     default n
diff --git a/components/lwp/lwp_syscall.c b/components/lwp/lwp_syscall.c
index f9bc84ea97..f2aec9303f 100644
--- a/components/lwp/lwp_syscall.c
+++ b/components/lwp/lwp_syscall.c
@@ -18,7 +18,6 @@
 
 #if (defined(RT_USING_SAL) && defined(SAL_USING_POSIX))
 #include <sys/socket.h>
-
 #define SYSCALL_NET(f) ((void*)(f))
 #else
 #define SYSCALL_NET(f) ((void*)sys_notimpl)
diff --git a/components/net/Kconfig b/components/net/Kconfig
index 0fede3eb90..4d6317bac6 100644
--- a/components/net/Kconfig
+++ b/components/net/Kconfig
@@ -41,9 +41,8 @@ config RT_USING_SAL
         config SAL_USING_POSIX
             bool "Enable BSD socket operated by file system API"
             default n
-            select RT_USING_DFS
-            select RT_USING_LIBC
             select RT_USING_POSIX
+            select RT_USING_POSIX_SELECT
             help
                 Let BSD socket operated by file system API, such as read/write and involveed in select/poll POSIX APIs.