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Author SHA1 Message Date
openharmony_ci b91fabb76c !292 新增link/symlink/readlink接口的系统调用及内核实现 
Merge pull request !292 from JING/link
 2021-06-10 13:02:04 +08:00
chenjing 6eddc869d3 feat: support link/symlink/readlink 
新增link/symlink/readlink接口的系统调用及内核实现，当前仅支持jffs2文件系统。具体接口说明如下：

一、hard link
接口原型：
int link(const char *oldpath, const char *newpath);
int linkat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath, int flags);

作用：
创建oldpath的硬链接，名为newpath。

功能说明：
1、newpath与oldpath必须在同一挂载分区内。
2、若newpath已存在，不会覆盖，错误码EEXIST。
3、oldpath必须为普通文件或者软链接文件。
4、如果oldpath是一个软链接文件，那么：
若调用link接口或者linkat（flags=0），创建出软链接文件的硬链接；
若调用linkat（flags = AT_SYMLINK_FOLLOW），创建出软链接所指向源文件的硬链接。
5、oldpath与newpath对应同一个文件，对oldpath与newpath任一名字的操作都是直接操作文件，没有“原始文件”的说法。
6、使用cp命令拷贝一个硬链接文件，生成文件的拷贝，新文件的nlink数为1。
7、删除oldpath或newpath，底层文件仍存在，可以通过另一个path访问。只有当两个path都删除之后，才会真正将文件删除，空间释放。

二、symbol link
接口原型：
int symlink(const char *target, const char *linkpath);
int symlinkat(const char *target, int newdirfd, const char *linkpath);

作用：
创建一个软链接文件linkpath，存储字符串target。

功能说明：
1、target可以为任意字符串（长度小于PATH_MAX）。
2、若linkpath文件名已存在，不会覆盖，错误码EEXIST。
3、用readlink函数可读取软链接的target内容。
4、软链接文件本身大小为target长度。
5、ls时软链接文件类型显示为 'l'。
6、symlink最大循环次数为CONFIG_FS_MAX_LNK_CNT（目前为40），超出则返回错误，错误码ELOOP。
7、使用cp命令拷贝一个软链接文件：
若target是一个文件：创建一个源文件的拷贝，类型为普通文件；
若target非文件：拷贝失败。

三、readlink
接口原型：
ssize_t readlink(const char *pathname, char *buf, size_t bufsiz);
ssize_t readlinkat(int dirfd, const char *pathname, char *buf, size_t bufsiz);

作用：
读取软链接文件存放的的target内容。

功能说明：
1、pathname必须为软链接文件，否则错误码EINVAL。
2、如果bufsiz小于target长度，则截断target。

close #I3Q0OD

Change-Id: I3864d6069b627b705a369e8e32dc1eb922dc0157
Signed-off-by: chenjing <chenjing139@huawei.com>
 2021-06-09 16:39:41 +08:00
lzl 6352d6e1da kernel adapter 
Signed-off-by: lzl <sucer_fater@163.com>
 2021-06-08 09:07:04 +00:00
openharmony_ci 1a3f3f54e7 !302 fix: Codex告警清零 
Merge pull request !302 from Far/master
 2021-06-08 08:48:48 +08:00
chenwei 101a55d119 fix: codex 
1，VFS代码中不修改参数增加const修饰
2，fs_file_mapping.c: 增加安全函数的判空
3，path_cache.c: sizeof改为使用类型
4，fs_syscall.c: 对NULL解引用
5，VnodeLookup：冗余的判空，及不正确的判空

close: I3UMWD
Signed-off-by: yansira <yansira@hotmail.com>
 2021-06-07 22:45:40 +08:00
Far b5370af822 fix: codex clean 
1. 修复可能对NULL指针解引用的场景
2. 将不修改内容的指针入参修改为const
3. 对getpgrp的返回值进行校验后再使用
4. 修复了局部变量未初始化的问题

Close #I3UOFN

Signed-off-by: Far <yesiyuan2@huawei.com>
 2021-06-07 17:08:02 +08:00
openharmony_ci efbab200aa !254 memory-based romfs 
Merge pull request !254 from LeonChan/lc-master
 2021-06-04 23:22:25 +08:00
openharmony_ci a580754751 !295 修复删除/dev目录下的文件但是vnode number没有减小的问题 
Merge pull request !295 from LeonChan/lc-bugfix-vnode
 2021-06-04 21:50:32 +08:00
chenwei 4f514a16af fix: the total used vnode number not increased after unlink a file under 
/dev/

fix #I3TS1Y
Signed-off-by: yansira <yansira@hotmail.com>
 2021-06-04 16:49:04 +08:00
chenwei c4595d2504 feat(file system): add memory-based romfs 
1, this RomFS's codebase is Nuttx romfs, then it is compatible with
Linux RomFS and you can create such a file system using the tool genromfs.
2, there are two major changes against with the original Nuttx romfs:
    1), it is memory-based: all contents of the fs are stored in the
        memory in the very first stage of "mount".
    2), this version of romfs is altered to be compatible with our new
        version of VFS to take advantage of vnode cache and path cache.

close: #I3S0CP
 2021-06-04 16:39:51 +08:00
li_zan f10dd7c135 feat: A核proc文件系统在echo模式下新增write的功能 
close: #I3T6MZ

Signed-off-by: li_zan <371442490@qq.com>
 2021-06-04 16:14:18 +08:00
openharmony_ci 3f16f1684a !248 fix: fix length typo 
Merge pull request !248 from kenneth/los_queue.h
 2021-05-22 09:13:46 +08:00
arvinzzz 8cde768588 refactor: Refactored the kernel boot process and added a init framework 
close: #I3I768

Change-Id: I4f801df4abe1a9afdf43391c28276e96a5e81513
 2021-05-20 16:45:43 +08:00
kenneth 12d98b144b fix: fix length typo 
fix typos length、there、necessary

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3RSY0
 2021-05-18 14:33:59 +08:00
openharmony_ci 616ca955d5 !220 statfs不能正常显示FAT12和FAT16分区的空闲块和有效块 
Merge pull request !220 from Far/fatfs
 2021-05-15 10:01:28 +08:00
zhOu f76fa4a344 feature: support ipc copy fd to process 2021-05-11 14:56:09 +08:00
Far 9503c4a9fc fix: statfs can't get f_bfree and f_bavail of a FAT12/FAT16 partition 
FAT12/FAT16 partition has no FSINFO sector storing the free cluster number,
so scanning the FAT is necessary to get the free clusters nums.

Close #I3Q0VS
 2021-05-08 10:02:55 +08:00
mucor 04bcb11c3c fix:add vnode destory for unregister dev node 
Change-Id: I2205bbf42e7c2339f81443ace6924b12f4fa1c09
 2021-04-30 15:31:03 +08:00
mucor 749420308e fix:shell cmd rm -r crash when open target dir failed 
Change-Id: I1146ab12b02aeef3f9a2a0422ee45936f5e4c105
 2021-04-29 16:52:13 +08:00
openharmony_ci 1d0a3f022b !186 将VnodeInUseIter和VnodeFreeAll函数改为非递归 
Merge pull request !186 from Far/dev
 2021-04-29 10:04:50 +08:00
openharmony_ci 6467ebb2dd !194 PathCacheMemoryDump内存占用统计错误 
Merge pull request !194 from Far/master
 2021-04-29 09:58:45 +08:00
openharmony_ci 67f9f7506c !192 format函数错误分支未释放锁 
Merge pull request !192 from Far/fatfs
 2021-04-29 09:57:58 +08:00
Far 5f6656cb36 fix: VnodeInUseIter and VnodeFreeAll used to be recursive 
Function VnodeInUseIter and VnodeFreeAll used to be recursive.
Now we traverse the current in-use vnode list to find the vnode in
1 filesystem

Close #I3NN3U
 2021-04-28 14:35:29 +08:00
Far 87da7c794c fix: PathCacheMemoryDump miscalculate the RAM usage of PathCache 
PathCacheMemoryDump miscalculate the RAM usage of PathCache for not
counting the name field of PathCache, which is allocated with PathCache

Close #I3OBXY
 2021-04-28 14:31:31 +08:00
mucor aa34ffe7c7 fix:remove redundant code 
Change-Id: I8662952ac9d7912aaf2e2e72f779b3def41d14c4
 2021-04-28 09:57:32 +08:00
Far 9b2b700fa0 fix: some branch in format does not release the vnode mutex properly 
if fatfs_mkfs returns a error, format may return without drop the vnode mutex, which may cause deadlock

Close #I3OFAY
 2021-04-27 16:49:23 +08:00
chenjing af61187587 fix: fix the inappropriate errno in FatFs 
The errno of unrecognized fat filesystem changes from ENOENT to ENOTSUP.

Close #I3O8IF
 2021-04-26 16:18:51 +08:00
openharmony_ci be40fa1381 !178 当从hashtable中获取Vnode缓存时，需要刷新Vnode的parent指针 
Merge pull request !178 from Far/fatfs
 2021-04-24 11:30:01 +08:00
openharmony_ci fbdb808d11 !169 los_disk_cache_clear错误日志缺少换行符 
Merge pull request !169 from Far/dev
 2021-04-24 09:39:54 +08:00
Far 9f47faff73 fix: PathCacheFree try to free name field in struct PathCache 
The name field of struct PathCache is not allocated. It should not try to free it by free(nc->name)

Close #I3NTH9
 2021-04-23 15:28:44 +08:00
Far f32caa52c6 fix: parent point of vnode found by VfsHashGet should be updated 
When fatfs_lookup find a vnode from hashlist, the field parent of vnode should be updated,
because the old parent may be reclaimed.

Close #I3NNFA
 2021-04-22 16:24:08 +08:00
openharmony_ci dc90400456 !171 ftruncate新增支持FAT12与FAT16 
Merge pull request !171 from JING/ftruncate
 2021-04-22 15:21:21 +08:00
mucor e8178d5917 refresh parent vnode when get vnode from hash table 
Change-Id: I3cc042b1fcd00022bc6ba48e2a05d70f351b83de
 2021-04-22 11:23:25 +08:00
JING 3027cfe543 fix ftruncate 2021-04-22 11:12:28 +08:00
openharmony_ci 89ed41a016 !173 [Desc] fix bug: kernel crashed after rmdir the umounted folder 
Merge pull request !173 from LeonChan/lc-master
 2021-04-21 19:31:12 +08:00
LeonChan f305d1f702 fix: kernel crashed when delete a umounted folder 2021-04-21 18:35:15 +08:00
chenwei ac0d083b1c fix: kernel crashed after rmdir the umounted folder 
Close: I3NGBT
Change-Id: I70130c42061e51f5978b48befea66a5925386343
 2021-04-21 17:31:28 +08:00
chenjing b9c544d898 Description: [fix]ftruncate bugfix 
Bug: #I3NEVN
Test:
 2021-04-21 16:16:08 +08:00
Far 5f6f683fab style: los_disk_cache_clear error message has no \n(LF) 
Close #I3NCDD
 2021-04-21 11:01:09 +08:00
openharmony_ci 6ee33eb893 !165 【轻量级 PR】：update fs/vfs/vnode_hash.c. 
Merge pull request !165 from 冷钦街/N/A
 2021-04-21 08:37:54 +08:00
openharmony_ci 7dd3b59fb0 !166 【轻量级 PR】：update fs/vfs/mount.c. 
Merge pull request !166 from 冷钦街/N/A
 2021-04-21 08:37:09 +08:00
冷钦街 d7798fd0ab update fs/vfs/path_cache.c. 2021-04-20 22:16:09 +08:00
openharmony_ci 5605063950 !163 [Desc] add debug code to fix bug: kernel crashed after rmdir the umounted folder 3 
Merge pull request !163 from LeonChan/lc-master
 2021-04-20 19:09:47 +08:00
冷钦街 0566bccffa update fs/vfs/mount.c. 2021-04-20 18:35:15 +08:00
冷钦街 9bcead9a8f update fs/vfs/vnode_hash.c. 2021-04-20 18:26:48 +08:00
chenwei c6e921241b fix: kernel crashed when delete a umounted folder 
Close: I3MZZ6
Change-Id: Iab3919a2eebb44c82531a7fa7a2f688ec4bcc5a0
 2021-04-20 16:10:24 +08:00
Far 902a11de9a fix: lookup new vnode may cause parent vnode freeing 
Close #I3MYP4

Change-Id: I533f4bacaf7e6dd500f5ac3ce4f5343b3b885988
 2021-04-20 11:43:14 +08:00
Caoruihong 7e73c929a2 remove __cplusplus guards in .c files 
Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f
 2021-04-19 18:28:25 +08:00
openharmony_ci 75a85e4483 !151 [Desc] add debug code to fix bug: kernel crashed after rmdir the umounted folder, parentVnode->data null 
Merge pull request !151 from LeonChan/lc-master
 2021-04-19 11:00:57 +08:00
openharmony_ci 23ee3689da !150 Initialize a parameter 
Merge pull request !150 from JING/master
 2021-04-19 10:18:25 +08:00