[dpdk-dev] [PATCH v5 03/10] windows/eal: translate Windows errors to errno-style errors

[Narcisa Ana Maria Vasile]

From: Narcisa Vasile <navas...@microsoft.com>

Add function to translate Windows error codes to
errno-style error codes.

Signed-off-by: Narcisa Vasile <navas...@microsoft.com>
---
 lib/librte_eal/windows/rte_thread.c | 65 ++++++++++++++++++++++-------
 1 file changed, 50 insertions(+), 15 deletions(-)

diff --git a/lib/librte_eal/windows/rte_thread.c 
b/lib/librte_eal/windows/rte_thread.c
index b29336cbd..e9181b47f 100644
--- a/lib/librte_eal/windows/rte_thread.c
+++ b/lib/librte_eal/windows/rte_thread.c
@@ -12,6 +12,47 @@ struct eal_tls_key {
        DWORD thread_index;
 };
 
+/* Translates the most common error codes related to threads */
+static int rte_thread_translate_win32_error(DWORD error)
+{
+       switch (error) {
+       case ERROR_SUCCESS:
+               return 0;
+
+       case ERROR_INVALID_PARAMETER:
+               return EINVAL;
+
+       case ERROR_INVALID_HANDLE:
+               return EFAULT;
+
+       case ERROR_NOT_ENOUGH_MEMORY:
+       /* FALLTHROUGH */
+       case ERROR_NO_SYSTEM_RESOURCES:
+               return ENOMEM;
+
+       case ERROR_PRIVILEGE_NOT_HELD:
+       /* FALLTHROUGH */
+       case ERROR_ACCESS_DENIED:
+               return EACCES;
+
+       case ERROR_ALREADY_EXISTS:
+               return EEXIST;
+
+       case ERROR_POSSIBLE_DEADLOCK:
+               return EDEADLK;
+
+       case ERROR_INVALID_FUNCTION:
+       /* FALLTHROUGH */
+       case ERROR_CALL_NOT_IMPLEMENTED:
+               return ENOSYS;
+
+       default:
+               return EINVAL;
+       }
+
+       return EINVAL;
+}
+
 rte_thread_t
 rte_thread_self(void)
 {
@@ -87,15 +128,13 @@ rte_thread_key_create(rte_thread_key *key,
        *key = malloc(sizeof(**key));
        if ((*key) == NULL) {
                RTE_LOG(DEBUG, EAL, "Cannot allocate TLS key.\n");
-               rte_errno = ENOMEM;
-               return -1;
+               return ENOMEM;
        }
        (*key)->thread_index = TlsAlloc();
        if ((*key)->thread_index == TLS_OUT_OF_INDEXES) {
                RTE_LOG_WIN32_ERR("TlsAlloc()");
                free(*key);
-               rte_errno = ENOEXEC;
-               return -1;
+               return rte_thread_translate_win32_error(GetLastError());
        }
        return 0;
 }
@@ -103,16 +142,14 @@ rte_thread_key_create(rte_thread_key *key,
 int
 rte_thread_key_delete(rte_thread_key key)
 {
-       if (!key) {
+       if (key == NULL) {
                RTE_LOG(DEBUG, EAL, "Invalid TLS key.\n");
-               rte_errno = EINVAL;
-               return -1;
+               return EINVAL;
        }
        if (!TlsFree(key->thread_index)) {
                RTE_LOG_WIN32_ERR("TlsFree()");
                free(key);
-               rte_errno = ENOEXEC;
-               return -1;
+               return rte_thread_translate_win32_error(GetLastError());
        }
        free(key);
        return 0;
@@ -123,17 +160,15 @@ rte_thread_value_set(rte_thread_key key, const void 
*value)
 {
        char *p;
 
-       if (!key) {
+       if (key == NULL) {
                RTE_LOG(DEBUG, EAL, "Invalid TLS key.\n");
-               rte_errno = EINVAL;
-               return -1;
+               return EINVAL;
        }
        /* discard const qualifier */
        p = (char *) (uintptr_t) value;
        if (!TlsSetValue(key->thread_index, p)) {
                RTE_LOG_WIN32_ERR("TlsSetValue()");
-               rte_errno = ENOEXEC;
-               return -1;
+               return rte_thread_translate_win32_error(GetLastError());
        }
        return 0;
 }
@@ -143,7 +178,7 @@ rte_thread_value_get(rte_thread_key key)
 {
        void *output;
 
-       if (!key) {
+       if (key == NULL) {
                RTE_LOG(DEBUG, EAL, "Invalid TLS key.\n");
                rte_errno = EINVAL;
                return NULL;
-- 
2.30.0.vfs.0.2