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Processing (GNU): fix command name reading

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This commit is contained in:
Carter Li
2025-08-24 21:50:21 +08:00
parent 74e0732390
commit 4b7f231b5a
1 changed files with 21 additions and 14 deletions
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src/common/processing_linux.c
+21 -14
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@@ -465,23 +465,30 @@ const char* ffProcessGetBasicInfoLinux(pid_t pid, FFstrbuf* name, pid_t* ppid, i
}
else
{
snprintf(procFilePath, sizeof(procFilePath), "/proc/%d/"
#if __GNU__
"cmdline"
#else
"comm"
#endif
, (int)pid);
#ifndef __GNU__
snprintf(procFilePath, sizeof(procFilePath), "/proc/%d/comm", (int)pid);
ssize_t nRead = ffReadFileBuffer(procFilePath, name);
if(nRead <= 0)
return "ffReadFileBuffer(/proc/pid/"
#if __GNU__
"cmdline"
#else
"comm"
#endif
", name) failed";
return "ffReadFileBuffer(/proc/pid/comm, name) failed";
ffStrbufTrimRightSpace(name);
#else
// No /proc/1/comm on Hurd so read /proc/1/stat again
snprintf(procFilePath, sizeof(procFilePath), "/proc/%d/stat", (int)pid);
char buf[PROC_FILE_BUFFSIZ];
ssize_t nRead = ffReadFileData(procFilePath, sizeof(buf) - 1, buf);
if(nRead <= 8)
return "ffReadFileData(/proc/pid/stat, PROC_FILE_BUFFSIZ-1, buf) failed";
buf[nRead] = '\0';
const char* start = memchr(buf, '(', (size_t) nRead);
if (!start)
return "memchr(stat, '(') failed";
start++;
const char* end = memchr(start, ')', (size_t) nRead - (size_t) (start - buf));
if (!end)
return "memchr(stat, ')') failed";
ffStrbufSetNS(name, (uint32_t) (end - start), start);
#endif
}
#elif defined(__APPLE__)