导致补丁的原因：**** 在线补丁格式错误

Question

我有一个我创建的差异文件。我尝试将它应用到另一个分支上patch -p1 --dry-run < ~/patch_name（我在第一个目录中 - 因此-p1），但我得到

补丁：**** 第 45 行格式错误的补丁：diff --FILE_LOCATION...

在该错误出现之前，打印了这些行；

checking file file_a
checking file file_b

所以，我知道这file_a, file_b没问题，而且我在第 45 行有问题，所以我删除了第 45 行到文件结尾（我做了 2 次 - 最后一次没有换行，一次有）。

现在的错误是

补丁：**** 第 44 行格式错误的补丁：diff --FILE_LOCATION...

这个补丁有什么问题？

这是补丁本身：

diff --git a/trunk/rf_iss/ISS/code/future/inc/params.h b/trunk/rf_iss/ISS/code/future/inc/params.h
index 1983556..16a8375 100755
--- a/trunk/rf_iss/ISS/code/future/inc/params.h
+++ b/trunk/rf_iss/ISS/code/future/inc/params.h
@@ -2348,6 +2348,7 @@ typedef UINT1 tLocalPortList [CONTEXT_PORT_LIST_SIZE];
 #define MAX_SLI_SLL_NODES               1500
 #define MAX_SLI_BUFF_BLOCKS             2
 #define MAX_SLI_FD_ARR_BLOCKS           2
+#define MAX_SLI_WAKEUP                  25
 #define MAX_SLI_SDT_BLOCKS              MAX_NO_OF_SOCKETS
 #define MAX_SLI_RAW_HASH_NODES          MAX_NO_OF_SOCKETS
 #define MAX_SLI_RAW_RCV_Q_NODES         MAX_NO_OF_SOCKETS
diff --git a/trunk/rf_iss/ISS/code/future/netip/fsip/udp/src/udptskmg.c b/trunk/rf_iss/ISS/code/future/netip/fsip/udp/src/udptskmg.c
index 9db6034..c5ac3ad 100755
--- a/trunk/rf_iss/ISS/code/future/netip/fsip/udp/src/udptskmg.c
+++ b/trunk/rf_iss/ISS/code/future/netip/fsip/udp/src/udptskmg.c
@@ -11,6 +11,7 @@

 static VOID Udp_timer_expiry_handler PROTO ((VOID));
 extern tMemPoolId   gUdp4MemPoolId;
+extern INT4         gi4SelectWakeupFd;
 /*-------------------------------------------------------------------+
  * Function           : Ip_Udp_Task_Init
  *
@@ -191,6 +192,20 @@ udp_task_enqueue_to_applications_in_cxt (UINT4 u4ContextId, UINT2 u2Port,
                                          t_UDP * pUdpHdr)
 {
     t_UDP_TO_APP_MSG_PARMS *pParms = NULL;
+
+    /* If queue is depleting reserved wakeupFd blocks drop packet */
+    if (pCtrlBlk->i4SockDesc != gi4SelectWakeupFd)
+    {
+       if (MemGetFreeUnits (gUdp4MemPoolId) <= MAX_SLI_WAKEUP)
+       {
+           IP_CXT_TRC (u4ContextId, UDP_MOD_TRC,
+                    ALL_FAILURE_TRC | CONTROL_PLANE_TRC, UDP_NAME,
+                    "Packet Discarded since memory goes over reserved wakeup fd's\n");
+           IP_RELEASE_BUF (pBuf, FALSE);
+           return IP_FAILURE;
+       }
+    }

     pParms = (t_UDP_TO_APP_MSG_PARMS *) MemAllocMemBlk (gUdp4MemPoolId);
     if (pParms == NULL)
diff --git a/trunk/rf_iss/ISS/code/future/sli/socket.c b/trunk/rf_iss/ISS/code/future/sli/socket.c
index 1ca5641..2ad721f 100755
--- a/trunk/rf_iss/ISS/code/future/sli/socket.c
+++ b/trunk/rf_iss/ISS/code/future/sli/socket.c
@@ -3244,6 +3244,26 @@ SliSendtoWithTrace (INT4 i4SockDesc, CONST VOID *pi1Buf, INT4 i4BufLen,
             }
             cpPeerSdtSock = SOCK_DESC_TABLE[i4PeerSockDesc];

+            /* check added to ensure that MAX_SLI_WAKEUP 
+             * units are reserved for WakeupFD socket. This is to 
+             * ensure wakeup fd is always protected such that once
+             * it gets notification, it will cleanup the filled
+             * udp queue. but wakeup fd could
+             * not be triggered because of lack of space in queue
+             * so explicitly reserve space for wakeup fd socket.
+             */
+            if (i4SockDesc != gi4SelectWakeupFd)
+            {
+                if (MemGetFreeUnits (gUdp4MemPoolId) <= MAX_SLI_WAKEUP)
+                {
+                     SLI_Release_Buffer (pBufChnHdr, FALSE);
+                     CpsdtSock->i1ErrorCode = SLI_EMEMFAIL;
+                     SLI_ERR (SLI_EMEMFAIL);
+                     GiveSliProtectSem(CpsdtSock->ProtectSemId);
+                     return SLI_FAILURE;
+                }
+            }
+ 
             /* allocate memory for UDP message from UDP4 mem pool */
             pParms = (t_UDP_TO_APP_MSG_PARMS *) MemAllocMemBlk (gUdp4MemPoolId);
             if (pParms == NULL)

我使用它创建了它，diff所以我不明白它怎么会格式错误......

Answer 1

我最近在手动编辑补丁文件时遇到了这个问题，因为它包含一些不需要的更改。

这是问题所在（我添加了行号来说明）：

@@ -191,6 +192,20 @@ udp_task_enqueue_to_applications_in_cxt (UINT4 u4ContextId, UINT2 u2Port,
1                                          t_UDP * pUdpHdr)
2 {
3     t_UDP_TO_APP_MSG_PARMS *pParms = NULL;
4+
5+    /* If queue is depleting reserved wakeupFd blocks drop packet */
6+    if (pCtrlBlk->i4SockDesc != gi4SelectWakeupFd)
7+    {
8+       if (MemGetFreeUnits (gUdp4MemPoolId) <= MAX_SLI_WAKEUP)
9+       {
10+           IP_CXT_TRC (u4ContextId, UDP_MOD_TRC,
11+                    ALL_FAILURE_TRC | CONTROL_PLANE_TRC, UDP_NAME,
12+                    "Packet Discarded since memory goes over reserved wakeup fd's\n");
13+           IP_RELEASE_BUF (pBuf, FALSE);
14+           return IP_FAILURE;
15+       }
16+    }
17
18    pParms = (t_UDP_TO_APP_MSG_PARMS *) MemAllocMemBlk (gUdp4MemPoolId);
19    if (pParms == NULL)

具体来说，问题在于“+192,20”

Patch 预计最终修补的大块长度为 20 行，但如果计算 6 个上下文行，加上 13 个添加的行，减去 0 个删除，则加起来仅为 19 个。您会注意到，后面的行if (pParms == NULL)发生了是第 45 行，这是错误消息中列出的行号 - 它到达第 45 行，期望在大块中再有一行，但收到​​了一条声明新大块的行。

如果您将第一行更改为

@@ -191,6 +192,19 @@ udp_task_enqueue_to_applications_in_cxt (UINT4 u4ContextId, UINT2 u2Port,

您的补丁应该正确应用。

Answer 2

rediff为你做工作。

请参阅此处的详细解释：

/sf/answers/2410194601/