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fs/chmod/fchmod/lchmod: only set permissions by mode_t and ignore other bits

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test case:

int main(void)
{
  struct stat buf;
  int ret;

  stat("test1.t", &buf);
  printf("test1.t st.mode:%x\n", buf.st_mode);
  stat("test.t", &buf);
  printf("test.t st.mode:%x\n", buf.st_mode);
  ret = chmod("test1.t", buf.st_mode);
  if (ret == 0)
    {
      stat("test1.t", &buf);
      printf("test1.t st.mode:%x\n", buf.st_mode);
    }

  return 0;
}

>>
test1.t st.mode:81b4
test.t st.mode:81fd
test1.t st.mode:81fd

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu1
2024-01-26 15:34:53 +08:00
committed by Xiang Xiao
parent a116a6210e
commit a2845faee3
2 changed files with 3 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
fs/vfs/fs_chstat.c
+2 -7
View File
@@ -118,11 +118,6 @@ static int chstat(FAR const char *path,
/* Adjust and check buf and flags */
if ((flags & CH_STAT_MODE) && (buf->st_mode & ~0177777))
{
goto errout;
}
if ((flags & CH_STAT_UID) && buf->st_uid == -1)
{
flags &= ~CH_STAT_UID;
@@ -210,7 +205,7 @@ int chmod(FAR const char *path, mode_t mode)
{
struct stat buf;
buf.st_mode = mode;
buf.st_mode = mode & 0777;
return chstat(path, &buf, CH_STAT_MODE, 1);
}
@@ -236,7 +231,7 @@ int lchmod(FAR const char *path, mode_t mode)
{
struct stat buf;
buf.st_mode = mode;
buf.st_mode = mode & 0777;
return chstat(path, &buf, CH_STAT_MODE, 0);
}
fs/vfs/fs_fchstat.c
+1 -6
View File
@@ -114,11 +114,6 @@ int file_fchstat(FAR struct file *filep, FAR struct stat *buf, int flags)
/* Adjust and check buf and flags */
if ((flags & CH_STAT_MODE) && (buf->st_mode & ~0177777))
{
return -EINVAL;
}
if ((flags & CH_STAT_UID) && buf->st_uid == -1)
{
flags &= ~CH_STAT_UID;
@@ -224,7 +219,7 @@ int fchmod(int fd, mode_t mode)
{
struct stat buf;
buf.st_mode = mode;
buf.st_mode = mode & 0777;
return fchstat(fd, &buf, CH_STAT_MODE);
}