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[dfs] Fix path buffer leaks in utimensat

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This commit is contained in:
hanzhijian
2026-08-20 18:30:47 +08:00
committed by Rbb666
parent 9fce24b62b
commit 7d1e551549
1 changed files with 26 additions and 19 deletions
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components/dfs/dfs_v2/src/dfs_posix.c
+26 -19
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@@ -157,9 +157,10 @@ int utimensat(int __fd, const char *__path, const struct timespec __times[2], in
struct stat buffer;
struct dfs_file *d;
char *fullpath;
char *allocated_path = RT_NULL;
struct dfs_attr attr;
time_t current_time;
char *link_fn = (char *)rt_malloc(DFS_PATH_MAX);
char *link_fn = RT_NULL;
int err;
if (__path == NULL)
@@ -188,12 +189,13 @@ int utimensat(int __fd, const char *__path, const struct timespec __times[2], in
return -EBADF;
}
fullpath = dfs_dentry_full_path(d->dentry);
if (!fullpath)
allocated_path = dfs_dentry_full_path(d->dentry);
if (!allocated_path)
{
rt_set_errno(-ENOMEM);
return -1;
}
fullpath = allocated_path;
}
}
@@ -230,30 +232,35 @@ int utimensat(int __fd, const char *__path, const struct timespec __times[2], in
{
if (S_ISLNK(buffer.st_mode) && (__flags != AT_SYMLINK_NOFOLLOW))
{
if (link_fn)
link_fn = (char *)rt_malloc(DFS_PATH_MAX);
if (!link_fn)
{
err = dfs_file_readlink(fullpath, link_fn, DFS_PATH_MAX);
if (err < 0)
{
rt_free(link_fn);
return -ENOENT;
}
else
{
fullpath = link_fn;
if (dfs_file_stat(fullpath, &buffer) != 0)
{
rt_free(link_fn);
return -ENOENT;
}
}
rt_set_errno(-ENOMEM);
ret = -1;
goto exit;
}
err = dfs_file_readlink(fullpath, link_fn, DFS_PATH_MAX);
if (err < 0)
{
ret = -ENOENT;
goto exit;
}
fullpath = link_fn;
if (dfs_file_stat(fullpath, &buffer) != 0)
{
ret = -ENOENT;
goto exit;
}
}
}
attr.st_mode = buffer.st_mode;
ret = dfs_file_setattr(fullpath, &attr);
exit:
rt_free(link_fn);
rt_free(allocated_path);
return ret;
}