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LibC: realpath() should assume the buffer is PATH_MAX bytes

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This commit is contained in:
Andreas Kling 2019-09-27 09:02:53 +02:00
parent f28fa616eb
commit 9470db92f4
1 changed files with 2 additions and 6 deletions
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8
Libraries/LibC/unistd.cpp
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@ -591,13 +591,9 @@ int umount(const char* mountpoint)
char* realpath(const char* pathname, char* buffer) char* realpath(const char* pathname, char* buffer)
{ {
size_t size; size_t size = PATH_MAX;
if (buffer == nullptr) { if (buffer == nullptr)
size = PATH_MAX;
buffer = (char*)malloc(size); buffer = (char*)malloc(size);
} else {
size = sizeof(buffer);
}
int rc = syscall(SC_realpath, pathname, buffer, size); int rc = syscall(SC_realpath, pathname, buffer, size);
if (rc < 0) { if (rc < 0) {
errno = -rc; errno = -rc;