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Support Linux < 3.6

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This commit is contained in:
topjohnwu 2022-10-15 20:18:20 -07:00
parent 916e373edb
commit 616adc22e1
1 changed files with 4 additions and 4 deletions
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8
native/src/base/files.rs
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@ -82,19 +82,19 @@ pub fn realpath(path: &CStr, buf: &mut [u8]) -> isize {
if let Some(fd) = open_fd!(path, O_PATH | O_CLOEXEC) { if let Some(fd) = open_fd!(path, O_PATH | O_CLOEXEC) {
let mut st1: libc::stat; let mut st1: libc::stat;
let mut st2: libc::stat; let mut st2: libc::stat;
let mut skip_check = false;
unsafe { unsafe {
st1 = std::mem::zeroed(); st1 = std::mem::zeroed();
if libc::fstat(fd.as_raw_fd(), &mut st1) < 0 { if libc::fstat(fd.as_raw_fd(), &mut st1) < 0 {
*errno() = ENOENT; // This shall only fail on Linux < 3.6
return -1; skip_check = true;
} }
} }
let len = fd_path(fd.as_raw_fd(), buf); let len = fd_path(fd.as_raw_fd(), buf);
unsafe { unsafe {
st2 = std::mem::zeroed(); st2 = std::mem::zeroed();
if libc::stat(buf.as_ptr().cast(), &mut st2) < 0 if libc::stat(buf.as_ptr().cast(), &mut st2) < 0
|| st2.st_dev != st1.st_dev || (!skip_check && (st2.st_dev != st1.st_dev || st2.st_ino != st1.st_ino))
|| st2.st_ino != st1.st_ino
{ {
*errno() = ENOENT; *errno() = ENOENT;
return -1; return -1;