[PATCH 4/4] pmap: reduced permissions

["Albert D. Cahalan" <acahalan@cs.uml.edu>]

This patch changes all 3 remaining maps files to be readable
only for the file owner. There have been privacy concerns.

Fedora Core 4 has been shipping with such permissions on
the /proc/*/maps file already. General system monitoring
tools seldom use these files.

Signed-off-by: Albert Cahalan <acahalan@gmail.com>

---

This applies to -git4, grabbed Saturday night.


diff -Naurd 3/fs/proc/base.c 4/fs/proc/base.c
--- 3/fs/proc/base.c	2006-01-22 15:23:13.000000000 -0500
+++ 4/fs/proc/base.c	2006-01-22 15:44:16.000000000 -0500
@@ -202,7 +202,7 @@
 	E(PROC_TGID_EXE,       "exe",     S_IFLNK|S_IRWXUGO),
 	E(PROC_TGID_MOUNTS,    "mounts",  S_IFREG|S_IRUGO),
 #ifdef CONFIG_MMU
-	E(PROC_TGID_PMAP,      "pmap",   S_IFREG|S_IRUGO),
+	E(PROC_TGID_PMAP,      "pmap",   S_IFREG|S_IRUSR),
 #endif
 #ifdef CONFIG_SECURITY
 	E(PROC_TGID_ATTR,      "attr",    S_IFDIR|S_IRUGO|S_IXUGO),
@@ -231,9 +231,9 @@
 	E(PROC_TID_CMDLINE,    "cmdline", S_IFREG|S_IRUGO),
 	E(PROC_TID_STAT,       "stat",    S_IFREG|S_IRUGO),
 	E(PROC_TID_STATM,      "statm",   S_IFREG|S_IRUGO),
-	E(PROC_TID_MAPS,       "maps",    S_IFREG|S_IRUGO),
+	E(PROC_TID_MAPS,       "maps",    S_IFREG|S_IRUSR),
 #ifdef CONFIG_NUMA
-	E(PROC_TID_NUMA_MAPS,  "numa_maps",    S_IFREG|S_IRUGO),
+	E(PROC_TID_NUMA_MAPS,  "numa_maps",    S_IFREG|S_IRUSR),
 #endif
 	E(PROC_TID_MEM,        "mem",     S_IFREG|S_IRUSR|S_IWUSR),
 #ifdef CONFIG_SECCOMP
-
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