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Cygwin: return correct FH_PROCESSFD for files under /proc/PID/fd subdir

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This allows easier handling of fd symlinks.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen
2019-01-05 21:36:34 +01:00
parent 36ff506ddc
commit f72191ac01
2 changed files with 11 additions and 3 deletions
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12
winsup/cygwin/fhandler_proc.cc
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@ -134,14 +134,22 @@ fhandler_proc::get_proc_fhandler (const char *path)
if (entry)
return entry->fhandler;
int pid = atoi (path);
char *e;
pid_t pid = strtoul (path, &e, 10);
if (*e != '/' && *e != '\0')
return FH_NADA;
pinfo p (pid);
/* If p->pid != pid, then pid is actually the Windows PID for an execed
Cygwin process, and the pinfo entry is the additional entry created
at exec time. We don't want to enable the user to access a process
entry by using the Win32 PID, though. */
if (p && p->pid == pid)
return FH_PROCESS;
{
/* Check for entry in fd subdir */
if (!strncmp (++e, "fd/", 3) && e[3] != '\0')
return FH_PROCESSFD;
return FH_PROCESS;
}
bool has_subdir = false;
while (*path)