diff options
Diffstat (limited to 'gnu/packages/patches/glibc-hurd-magic-pid.patch')
| -rw-r--r-- | gnu/packages/patches/glibc-hurd-magic-pid.patch | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/gnu/packages/patches/glibc-hurd-magic-pid.patch b/gnu/packages/patches/glibc-hurd-magic-pid.patch new file mode 100644 index 0000000000..a6849f7d35 --- /dev/null +++ b/gnu/packages/patches/glibc-hurd-magic-pid.patch @@ -0,0 +1,190 @@ +This patch implements "magic" lookup for "pid/…", as used when looking up +/proc/self. + +The patch comes from the 't/magic-pid' branch +at <https://git.savannah.gnu.org/cgit/hurd/glibc.git>. It squashes +commit 392e52286a302ca6157fbd221295e64ab6b6d8ba (by Justus Winter) +and commit 392e52286a302ca6157fbd221295e64ab6b6d8ba (a subsequent fix by +Samuel Thibault). + +From: Justus Winter <4winter@informatik.uni-hamburg.de> +Subject: [PATCH] hurd: Handle `pid' magical lookup retry + + * hurd/lookup-retry.c: Handle `pid' magical lookup + retry. + +diff --git a/hurd/lookup-retry.c b/hurd/lookup-retry.c +index aee2ba8f93..6ed8de1653 100644 +--- a/hurd/lookup-retry.c ++++ b/hurd/lookup-retry.c +@@ -25,6 +25,7 @@ + #include <string.h> + #include <_itoa.h> + #include <eloop-threshold.h> ++#include <unistd.h> + + /* Translate the error from dir_lookup into the error the user sees. */ + static inline error_t +@@ -59,6 +60,7 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + error_t err; + char *file_name; + int nloops; ++ file_t lastdir = MACH_PORT_NULL; + + error_t lookup_op (file_t startdir) + { +@@ -107,14 +109,15 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + { + case FS_RETRY_REAUTH: + if (err = reauthenticate (*result)) +- return err; ++ goto out; + /* Fall through. */ + + case FS_RETRY_NORMAL: + if (nloops++ >= __eloop_threshold ()) + { + __mach_port_deallocate (__mach_task_self (), *result); +- return ELOOP; ++ err = ELOOP; ++ goto out; + } + + /* An empty RETRYNAME indicates we have the final port. */ +@@ -174,7 +177,7 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + + if (err) + __mach_port_deallocate (__mach_task_self (), *result); +- return err; ++ goto out; + } + + startdir = *result; +@@ -189,7 +192,10 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + if (*result != MACH_PORT_NULL) + __mach_port_deallocate (__mach_task_self (), *result); + if (nloops++ >= __eloop_threshold ()) +- return ELOOP; ++ { ++ err = ELOOP; ++ goto out; ++ } + file_name = &retryname[1]; + break; + +@@ -208,7 +214,8 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + (*end != '/' && *end != '\0')) + { + errno = save; +- return ENOENT; ++ err = ENOENT; ++ goto out; + } + if (! get_dtable_port) + err = EGRATUITOUS; +@@ -226,9 +233,12 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + } + errno = save; + if (err) +- return err; ++ goto out; + if (*end == '\0') +- return 0; ++ { ++ err = 0; ++ goto out; ++ } + else + { + /* Do a normal retry on the remaining components. */ +@@ -255,9 +265,12 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + if (err = __host_info (__mach_host_self (), HOST_BASIC_INFO, + (integer_t *) &hostinfo, + &hostinfocnt)) +- return err; ++ goto out; + if (hostinfocnt != HOST_BASIC_INFO_COUNT) +- return EGRATUITOUS; ++ { ++ err = EGRATUITOUS; ++ goto out; ++ } + p = _itoa (hostinfo.cpu_subtype, &retryname[8], 10, 0); + *--p = '/'; + p = _itoa (hostinfo.cpu_type, &retryname[8], 10, 0); +@@ -293,10 +306,11 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + } + + case '\0': +- return opentty (result); ++ err = opentty (result); ++ goto out; + case '/': + if (err = opentty (&startdir)) +- return err; ++ goto out; + strcpy (retryname, &retryname[4]); + break; + default: +@@ -306,14 +320,48 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + goto bad_magic; + break; + ++ case 'p': ++ if (retryname[1] == 'i' && retryname[2] == 'd' && ++ (retryname[3] == '/' || retryname[3] == 0)) ++ { ++ char *p, buf[1024]; /* XXX */ ++ size_t len; ++ p = _itoa (__getpid (), &buf[sizeof buf], 10, 0); ++ len = &buf[sizeof buf] - p; ++ memcpy (buf, p, len); ++ strcpy (buf + len, &retryname[3]); ++ strcpy (retryname, buf); ++ ++ /* Do a normal retry on the remaining components. */ ++ __mach_port_mod_refs (__mach_task_self (), lastdir, ++ MACH_PORT_RIGHT_SEND, 1); ++ startdir = lastdir; ++ file_name = retryname; ++ } ++ else ++ goto bad_magic; ++ break; ++ + default: + bad_magic: +- return EGRATUITOUS; ++ err = EGRATUITOUS; ++ goto out; + } + break; + + default: +- return EGRATUITOUS; ++ err = EGRATUITOUS; ++ goto out; ++ } ++ ++ if (MACH_PORT_VALID (*result) && *result != lastdir) ++ { ++ if (MACH_PORT_VALID (lastdir)) ++ __mach_port_deallocate (__mach_task_self (), lastdir); ++ ++ lastdir = *result; ++ __mach_port_mod_refs (__mach_task_self (), lastdir, ++ MACH_PORT_RIGHT_SEND, 1); + } + + if (startdir != MACH_PORT_NULL) +@@ -326,6 +374,10 @@ __hurd_file_name_lookup_retry (error_t (*use_init_port) + err = (*use_init_port) (dirport, &lookup_op); + } while (! err); + ++out: ++ if (MACH_PORT_VALID (lastdir)) ++ __mach_port_deallocate (__mach_task_self (), lastdir); ++ + return err; + } + weak_alias (__hurd_file_name_lookup_retry, hurd_file_name_lookup_retry) |