From aeb886bc53d41d220abef37e26372c8110669d64 Mon Sep 17 00:00:00 2001
From: drh <>
Date: Fri, 24 Oct 2025 20:26:13 +0000
Subject: [PATCH] Easier to read /proc lock interpretation.

FossilOrigin-Name: d7bcc54beb6463501c0559333455bd2a378798b58cb48f35590e9026d07acd2f
---
 manifest      | 12 ++++++------
 manifest.uuid |  2 +-
 src/os_unix.c | 19 ++++++++++++++++---
 3 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/manifest b/manifest
index 49e87628d9..e783ea0362 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Flesh\sout\sthe\ssqlite_file_info()\sfunction\sfurther,\sand\sin\sparticular\nshow\slocks\sbased\sin\s/proc/PID/fdinfo/FD,\swhen\sthat\sinformation\sis\navailable.
-D 2025-10-24T20:04:16.194
+C Easier\sto\sread\s/proc\slock\sinterpretation.
+D 2025-10-24T20:26:13.562
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -720,7 +720,7 @@ F src/os.h 1ff5ae51d339d0e30d8a9d814f4b8f8e448169304d83a7ed9db66a65732f3e63
 F src/os_common.h 6c0eb8dd40ef3e12fe585a13e709710267a258e2c8dd1c40b1948a1d14582e06
 F src/os_kv.c fb7ba8d6204197357f1eb7e1c7450d09c10043bf7e99aba602f4aa46b8fb11a3
 F src/os_setup.h 8efc64eda6a6c2f221387eefc2e7e45fd5a3d5c8337a7a83519ba4fbd2957ae2
-F src/os_unix.c 4e4b97b4a1d915bbc268517fe16d5e4970358fae6a122934f0d9ff5778bcb161
+F src/os_unix.c b5f955d80854ffb836dc61aab2e3207cbe75fb1f75abe465af1e0fd6e4185c0c
 F src/os_win.c 5b14841f9c3ab76841c06a4eca20ba3e7747f44253eba9dfd3d918797e753d49
 F src/os_win.h 4c247cdb6d407c75186c94a1e84d5a22cbae4adcec93fcae8d2bc1f956fd1f19
 F src/pager.c 113f9149092ccff6cf90e97c2611200e5a237f13d26c394bc9fd933377852764
@@ -2171,8 +2171,8 @@ F tool/version-info.c 33d0390ef484b3b1cb685d59362be891ea162123cea181cb8e6d2cf6dd
 F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
 F tool/warnings.sh 1ad0169b022b280bcaaf94a7fa231591be96b514230ab5c98fbf15cd7df842dd
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 56ab9692583d5b64e1ab727e08a01c0a65b4e318b455c94397663ef8d3d7b6b8
-R 51358186c41fbead92cefc106db30235
+P ce75111cced8a03f05cf47ef809b9f017f2dac3c64c6008d595f28dbfec32057
+R e81b72d89ea720b63d81165aacbbddaf
 U drh
-Z f2165d703890ae202e9f45a83048419c
+Z 2d238be892f323f949a2bd6e1256d798
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 12340ad267..429cac073e 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-ce75111cced8a03f05cf47ef809b9f017f2dac3c64c6008d595f28dbfec32057
+d7bcc54beb6463501c0559333455bd2a378798b58cb48f35590e9026d07acd2f
diff --git a/src/os_unix.c b/src/os_unix.c
index dc6be15242..1c5a67cdde 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -4006,7 +4006,7 @@ static void unixProcFSLocks(int fd, sqlite3_str *pStr, sqlite3_uint64 iAssert){
   int in;
   ssize_t n;
   char *p, *pNext, *x;
-  char *zSp = "";
+  int nLock = 0;
   char z[2000];
 
   sqlite3_snprintf(sizeof(z), z, "/proc/%d/fdinfo/%d", getpid(), fd);
@@ -4040,8 +4040,21 @@ static void unixProcFSLocks(int fd, sqlite3_str *pStr, sqlite3_uint64 iAssert){
           if( x ){
             iFirst = strtoll(x+1, 0, 10);
             if( pStr ){
-              sqlite3_str_appendf(pStr,"%s%c %lld %lld",zSp,cType,iFirst,iLast);
-              zSp = " ";
+              const int shmBase = (22+SQLITE_SHM_NLOCK)*4;
+              if( (nLock++)>0 ) sqlite3_str_append(pStr," ",1);
+              sqlite3_str_appendf(pStr, "%c ", cType);
+              if( iFirst>=PENDING_BYTE ){
+                /*  "P+" stands for PENDING_BYTE+ */
+                sqlite3_str_appendf(pStr, "P+%lld", iFirst - PENDING_BYTE);
+              }else if( iFirst>=shmBase ){
+                /*  "B+" stands for UNIX_SHM_BASE+ */
+                sqlite3_str_appendf(pStr, "B+%lld", iFirst - shmBase);
+              }else{
+                sqlite3_str_appendf(pStr, "%lld", iFirst);
+              }
+              if( iLast>iFirst ){
+                sqlite3_str_appendf(pStr,"(%lld)", iLast-iFirst+1);
+              }
             }
             if( iAssert!=0 ){
               if( iAssert/4>=iFirst && iAssert/4<=iLast ){
-- 
2.47.3