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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 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
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
zhOu f76fa4a344 feature: support ipc copy fd to process 2021-05-11 14:56:09 +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
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
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
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
chenwei ac0d083b1c fix: kernel crashed after rmdir the umounted folder 
Close: I3NGBT
Change-Id: I70130c42061e51f5978b48befea66a5925386343
 2021-04-21 17:31:28 +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
chenwei 296274b60f add debug code to fix bug: kernel crashed after rmdir the umounted folder, parent->data null 
Change-Id: I44981eb9475feb4604ffe91244b4dff00f7d1548
 2021-04-17 11:44:03 +08:00
openharmony_ci 0e56ee6509 !147 fix capabilities in write and execute case 
Merge pull request !147 from 野生毛霉君/master
 2021-04-17 09:46:29 +08:00
mucor c6b898ea30 fix capabilities in write and execute case 
Change-Id: Ic9abc53cd0aafa1fd6272fab8191493c609ea995
 2021-04-16 17:33:40 +08:00
openharmony_ci af2b0ac75b !144 用于检测umount栈溢出的调测功能 
Merge pull request !144 from ysy4tc3/dev
 2021-04-16 17:11:28 +08:00
chenwei a7c5abf64c add debug code to fix bug: kernel crashed after rmdir the umounted folder 
Change-Id: Ia956fd09f1bd734cd26ab631359c1e2131fe1e37
 2021-04-16 11:30:04 +08:00
Far 7e0e46828b Bugfix: add vnode iteration debug feature for a bug 
buginfo: when try to umount a nfs node, it may casue stack overflow.

Change-Id: I7d96f74a770607c990ca5f51cb92fb2843a08d12
 2021-04-16 11:00:38 +08:00
Far beca52b61b Feature: Fatfs scandir format and mmcblk read/write optimization 
1. Bcache block with high mem address is after lower mem address in RCU list when initing bcache.
2. Format will clear the bcache before writing the FAT.
3. The fatfs_readdir use the bcache writing block to reduce the chance of data switching out
4. Add performance analysing macron switch

Change-Id: I8fbc48418509d2e660d725d2c265266e931c26f8
 2021-04-15 14:49:43 +08:00
Guangyao Ma ce849f2145 feat: add and fix some syscall 
add SysFstatat64 SysInfo SysVfork SysGetrusage
fix up SysDup SysFcntl

Change-Id: If41228da62f406312858921e48e2210e04f16a16
 2021-04-09 14:45:53 +08:00
openharmony_ci 90b9c37b66 !107 Fix OHOS shell cannot ls a file 
Merge pull request !107 from ysy4tc3/dev
 2021-04-01 14:47:04 +08:00
openharmony_ci be5e5fdf42 !112 修复代码段及只读段在uncache映射区域可以篡改的漏洞 
Merge pull request !112 from JerryH/mmu
 2021-04-01 09:51:59 +08:00
Far 704f60f687 Description: fix OHOS shell cannot ls a file 
Change-Id: Ia403ada9bbb688b81a6e188f591211d10349a7f0
 2021-03-31 19:12:22 +08:00
YOUR_NAME c959d43684 IssueNo:#I3E0F2 
Description:Delete VM to support only kernel mode.
Sig:liteos_a
Feature or Bugfix:Feature
Binary Source:No

Change-Id: Ie1029c8fbc0c1b85c138663933118d2d148b7769
 2021-03-31 16:14:54 +08:00
laokz 349c1e46de QEMU arm platform: get 'bootargs' from flash; fix code style 
Change-Id: I94175fa89a61f4f08d9f921203bedfc2dd9e53e4
 2021-03-30 23:07:22 +08:00
mucor f82be437b9 change while loop to for loop 
Change-Id: Ie5c0cbca1e94c97ee2f511bf5ee3cdfb8c085a79
 2021-03-30 10:54:37 +08:00
openharmony_ci e3ca50e8ad !92 fix bad code in fs codes 
Merge pull request !92 from 野生毛霉君/master
 2021-03-30 09:49:11 +08:00
openharmony_ci 7387d410bf !100 解决kernel/liteos_a仓下关闭fat，编译不过的问题 
Merge pull request !100 from li_zan/master
 2021-03-29 12:06:31 +08:00
li_zan ee740f627f change config for fs2 2021-03-27 17:20:18 +08:00
YOUR_NAME b1be50cdb9 [Desc] Support to close syscall. 
Change-Id: I6f7c469e96da9cc89c5c33bf7a9afe19625e175f
 2021-03-26 20:12:50 +08:00