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Kernel: sys$readlink() should return the number of bytes written out

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This commit is contained in:
Andreas Kling 2020-01-27 21:47:30 +01:00
parent a7b984ec49
commit c64904a483
2 changed files with 6 additions and 1 deletions
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2
Kernel/Process.cpp
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@ -1854,7 +1854,7 @@ int Process::sys$readlink(const Syscall::SC_readlink_params* user_params)
if (link_target.length() + 1 > params.buffer.size) if (link_target.length() + 1 > params.buffer.size)
return -ENAMETOOLONG; return -ENAMETOOLONG;
copy_to_user(params.buffer.data, link_target.characters(), link_target.length() + 1); copy_to_user(params.buffer.data, link_target.characters(), link_target.length() + 1);
return 0; return link_target.length() + 1;
} }
int Process::sys$chdir(const char* user_path, size_t path_length) int Process::sys$chdir(const char* user_path, size_t path_length)

5
Userland/test_io.cpp
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@ -210,6 +210,11 @@ void test_unlink_symlink()
perror("symlink"); perror("symlink");
ASSERT_NOT_REACHED(); ASSERT_NOT_REACHED();
} }
char buffer[PATH_MAX];
rc = readlink("/tmp/linky", buffer, sizeof(buffer));
ASSERT(rc == strlen("/proc/2/foo") + 1);
rc = unlink("/tmp/linky"); rc = unlink("/tmp/linky");
if (rc < 0) { if (rc < 0) {
perror("unlink"); perror("unlink");