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🐞 fix(components/lwp/lwp_syscall.c): fix sys_readlink

This commit is contained in:
xqyjlj 2023-03-28 11:18:06 +08:00 committed by guo
parent 157dc0959c
commit 63c7d0ceb4
1 changed files with 17 additions and 4 deletions
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21
components/lwp/lwp_syscall.c
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@ -4157,7 +4157,7 @@ sysret_t sys_getrandom(void *buf, size_t buflen, unsigned int flags)
ssize_t sys_readlink(char* path, char *buf, size_t bufsz)
{
size_t len, copy_len;
int err;
int err, rtn;
int fd = -1;
struct dfs_fd *d;
char *copy_path;
@ -4184,12 +4184,25 @@ ssize_t sys_readlink(char* path, char *buf, size_t bufsz)
/* musl __procfdname */
err = sscanf(copy_path, "/proc/self/fd/%d", &fd);
rt_free(copy_path);
if (err != 1)
{
LOG_E("readlink: path not is /proc/self/fd/* , call by musl __procfdname()?");
return -EINVAL;
rtn = 0;
if (access(copy_path, 0))
{
rtn = -ENOENT;
LOG_E("readlink: path not is /proc/self/fd/* and path not exits, call by musl __procfdname()?");
}
else
{
rtn = lwp_put_to_user(buf, copy_path, copy_len);
}
rt_free(copy_path);
return rtn;
}
else
{
rt_free(copy_path);
}
d = fd_get(fd);