Add additional information about unix file descriptors to the same database file

in the sqlite_file_info() output.

FossilOrigin-Name: 64045f0a4d71ef068d64f2f25799cf1ae79c3cdb94039c73f1066290e3dbc943

manifest

@@ -1,5 +1,5 @@
-C Adjust\sunixPosixAdvisorLocks()\sto\suse\sredirectable\ssystem\scalls\sso\sthat\nit\scan\sbe\stested.
+C Add\sadditional\sinformation\sabout\sunix\sfile\sdescriptors\sto\sthe\ssame\sdatabase\sfile\nin\sthe\ssqlite_file_info()\soutput.
-D 2025-10-25T18:40:18.437
+D 2025-10-25T19:26:16.953
 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 35ea3a2362b58390181bbb2450006558eb2fca72df31f6a933967ade4baa1172
+F src/os_unix.c 8259386c205ae2297f9487c4e14169474697ef9c4c78e5ef546787eb2221523b
 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 82f907016ee75ca288d8ac0664d5c147fbfad42c5f8222211acc3220bd0eb609
+P eafe88b782875cd839fc27da509830e3e1d95781c686e27242a2844910203a42
-R 72947327af2da3dba426a4fa276ec4a3
+R 7022e3a791fb52de409c6fc91d6ad96f
 U drh
-Z a63b0b7b05ef1a6b7c4fe4c0a7d92948
+Z 4dfb0e7c66571c44833f2e4abaab7a73
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-eafe88b782875cd839fc27da509830e3e1d95781c686e27242a2844910203a42
+64045f0a4d71ef068d64f2f25799cf1ae79c3cdb94039c73f1066290e3dbc943

src/os_unix.c

@@ -4266,17 +4266,19 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
     case SQLITE_FCNTL_GET_INFO: {
       sqlite3_str *pStr = (sqlite3_str*)pArg;
       char aLck[16];
+      unixInodeInfo *pInode;
+      static const char *azLock[] = { "SHARED", "RESERVED",
+                                      "PENDING", "EXCLUSIVE" };
       sqlite3_str_appendf(pStr, "{\"h\":%d", pFile->h);
       sqlite3_str_appendf(pStr, ",\"vfs\":\"%s\"", pFile->pVfs->zName);
       if( pFile->eFileLock ){
-        static const char *azLock[] = { "SHARED", "RESERVED",
-                                      "PENDING", "EXCLUSIVE" };
         sqlite3_str_appendf(pStr, ",\"eFileLock\":\"%s\"", 
                                   azLock[pFile->eFileLock-1]);
         if( unixPosixAdvisoryLocks(pFile->h, aLck)==SQLITE_OK ){
           sqlite3_str_appendf(pStr, ",\"pal\":\"%s\"", aLck);
         }
       }
+      unixEnterMutex();
       if( pFile->pShm ){
         sqlite3_str_appendall(pStr, ",\"shm\":");
         unixDescribeShm(pStr, pFile->pShm);
@@ -4287,6 +4289,34 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
         sqlite3_str_appendf(pStr, ",\"nFetchOut\":%d", pFile->nFetchOut);
       }
 #endif
+      if( (pInode = pFile->pInode)!=0 ){
+        sqlite3_str_appendf(pStr, ",\"inode\":{\"nRef\":%d",pInode->nRef);
+        sqlite3_mutex_enter(pInode->pLockMutex);
+        sqlite3_str_appendf(pStr, ",\"nShared\":%d", pInode->nShared);
+        if( pInode->eFileLock ){
+          sqlite3_str_appendf(pStr, ",\"eFileLock\":\"%s\"", 
+                                  azLock[pInode->eFileLock-1]);
+        }
+        if( pInode->pUnused ){
+          char cSep = '[';
+          UnixUnusedFd *pUFd = pFile->pInode->pUnused;
+          sqlite3_str_appendall(pStr, ",\"unusedFd\":");
+          while( pUFd ){
+            sqlite3_str_appendf(pStr, "%c{\"fd\":%d,\"flags\":%d",
+                                cSep, pUFd->fd, pUFd->flags);
+            cSep = ',';
+            if( unixPosixAdvisoryLocks(pFile->h, aLck)==SQLITE_OK ){
+              sqlite3_str_appendf(pStr, ",\"pal\":\"%s\"", aLck);
+            }
+            sqlite3_str_append(pStr, "}", 1);
+            pUFd = pUFd->pNext;
+          }
+          sqlite3_str_append(pStr, "]", 1);
+        }
+        sqlite3_mutex_leave(pInode->pLockMutex);
+        sqlite3_str_append(pStr, "}", 1);
+      }
+      unixLeaveMutex();
       sqlite3_str_append(pStr, "}", 1);
       return SQLITE_OK;
     }
@@ -4565,9 +4595,8 @@ static void unixDescribeShm(sqlite3_str *pStr, unixShm *pShm){
   unixShmNode *pNode = pShm->pShmNode;
   char aLck[16];
   sqlite3_str_appendf(pStr, "{\"h\":%d", pNode->hShm);
-  unixEnterMutex();
+  assert( unixMutexHeld() );
   sqlite3_str_appendf(pStr, ",\"nRef\":%d", pNode->nRef);
-  unixLeaveMutex();
   sqlite3_str_appendf(pStr, ",\"id\":%d", pShm->id);
   sqlite3_str_appendf(pStr, ",\"sharedMask\":%d", pShm->sharedMask);
   sqlite3_str_appendf(pStr, ",\"exclMask\":%d", pShm->exclMask);