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-rw-r--r--lib/posix/epoll.nim2
-rw-r--r--lib/posix/inotify.nim2
-rw-r--r--lib/posix/kqueue.nim8
-rw-r--r--lib/posix/linux.nim4
-rw-r--r--lib/posix/posix.nim46
-rw-r--r--lib/posix/posix_linux_amd64.nim4
-rw-r--r--lib/posix/posix_linux_amd64_consts.nim3
-rw-r--r--lib/posix/posix_other.nim16
-rw-r--r--lib/posix/posix_other_consts.nim3
-rw-r--r--lib/posix/termios.nim2
10 files changed, 64 insertions, 26 deletions
diff --git a/lib/posix/epoll.nim b/lib/posix/epoll.nim
index c5ed1a873..2d38137bb 100644
--- a/lib/posix/epoll.nim
+++ b/lib/posix/epoll.nim
@@ -7,7 +7,7 @@
 #    distribution, for details about the copyright.
 #
 
-{.deadCodeElim:on.}
+{.deadCodeElim: on.}  # dce option deprecated
 
 from posix import SocketHandle
 
diff --git a/lib/posix/inotify.nim b/lib/posix/inotify.nim
index a206f8067..359e88617 100644
--- a/lib/posix/inotify.nim
+++ b/lib/posix/inotify.nim
@@ -7,7 +7,7 @@
 #    distribution, for details about the copyright.
 #
 
-{.deadCodeElim:on.}
+{.deadCodeElim: on.}  # dce option deprecated
 
 # Get the platform-dependent flags.
 # Structure describing an inotify event.
diff --git a/lib/posix/kqueue.nim b/lib/posix/kqueue.nim
index 730491a53..18b47f5d5 100644
--- a/lib/posix/kqueue.nim
+++ b/lib/posix/kqueue.nim
@@ -7,8 +7,6 @@
 #    distribution, for details about the copyright.
 #
 
-{.deadCodeElim:on.}
-
 from posix import Timespec
 
 when defined(macosx) or defined(freebsd) or defined(openbsd) or
@@ -61,7 +59,7 @@ const
   EV_CLEAR*    = 0x0020 ## Clear event state after reporting.
   EV_RECEIPT*  = 0x0040 ## Force EV_ERROR on success, data == 0
   EV_DISPATCH* = 0x0080 ## Disable event after reporting.
-  
+
   EV_SYSFLAGS* = 0xF000 ## Reserved by system
   EV_DROP*     = 0x1000 ## Not should be dropped
   EV_FLAG1*    = 0x2000 ## Filter-specific flag
@@ -87,10 +85,10 @@ when defined(macosx) or defined(freebsd) or defined(dragonfly):
     NOTE_FFAND*      = 0x40000000'u32 ## AND fflags
     NOTE_FFOR*       = 0x80000000'u32 ## OR fflags
     NOTE_FFCOPY*     = 0xc0000000'u32 ## copy fflags
-    NOTE_FFCTRLMASK* = 0xc0000000'u32 ## masks for operations 
+    NOTE_FFCTRLMASK* = 0xc0000000'u32 ## masks for operations
     NOTE_FFLAGSMASK* = 0x00ffffff'u32
 
-    NOTE_TRIGGER*    = 0x01000000'u32 ## Cause the event to be triggered 
+    NOTE_TRIGGER*    = 0x01000000'u32 ## Cause the event to be triggered
                                       ## for output.
 
 # data/hint flags for EVFILT_{READ|WRITE}, shared with userspace
diff --git a/lib/posix/linux.nim b/lib/posix/linux.nim
index 8786ab535..25c7c7979 100644
--- a/lib/posix/linux.nim
+++ b/lib/posix/linux.nim
@@ -1,4 +1,4 @@
-{.deadCodeElim:on.}
+{.deadCodeElim: on.}  # dce option deprecated
 
 import posix
 
@@ -27,4 +27,4 @@ proc clone*(fn: pointer; child_stack: pointer; flags: cint;
             arg: pointer; ptid: ptr Pid; tls: pointer;
             ctid: ptr Pid): cint {.importc, header: "<sched.h>".}
 
-proc pipe2*(a: array[0..1, cint], flags: cint): cint {.importc, header: "<unistd.h>".}
\ No newline at end of file
+proc pipe2*(a: array[0..1, cint], flags: cint): cint {.importc, header: "<unistd.h>".}
diff --git a/lib/posix/posix.nim b/lib/posix/posix.nim
index fba35868c..db5f575af 100644
--- a/lib/posix/posix.nim
+++ b/lib/posix/posix.nim
@@ -27,10 +27,10 @@
 ## resulting C code will just ``#include <XYZ.h>`` and *not* define the
 ## symbols declared here.
 
-# This ensures that we don't accidentally generate #includes for files that
-# might not exist on a specific platform! The user will get an error only
-# if they actualy try to use the missing declaration
-{.deadCodeElim: on.}
+# Dead code elimination ensures that we don't accidentally generate #includes
+# for files that might not exist on a specific platform! The user will get an
+# error only if they actualy try to use the missing declaration
+{.deadCodeElim: on.}  # dce option deprecated
 
 # TODO these constants don't seem to be fetched from a header file for unknown
 #      platforms - where do they come from and why are they here?
@@ -82,6 +82,14 @@ const
 # Special types
 type Sighandler = proc (a: cint) {.noconv.}
 
+const StatHasNanoseconds* = defined(linux) or defined(freebsd) or
+    defined(openbsd) or defined(dragonfly) ## \
+  ## Boolean flag that indicates if the system supports nanosecond time
+  ## resolution in the fields of ``Stat``. Note that the nanosecond based fields
+  ## (``Stat.st_atim``, ``Stat.st_mtim`` and ``Stat.st_ctim``) can be accessed
+  ## without checking this flag, because this module defines fallback procs
+  ## when they are not available.
+
 # Platform specific stuff
 
 when defined(linux) and defined(amd64):
@@ -92,9 +100,9 @@ else:
 # There used to be this name in posix.nim a long time ago, not sure why!
 {.deprecated: [cSIG_HOLD: SIG_HOLD].}
 
-when not defined(macosx) and not defined(android):
+when StatHasNanoseconds:
   proc st_atime*(s: Stat): Time {.inline.} =
-    ## Second-granularity time of last access
+    ## Second-granularity time of last access.
     result = s.st_atim.tv_sec
   proc st_mtime*(s: Stat): Time {.inline.} =
     ## Second-granularity time of last data modification.
@@ -102,6 +110,16 @@ when not defined(macosx) and not defined(android):
   proc st_ctime*(s: Stat): Time {.inline.} =
     ## Second-granularity time of last status change.
     result = s.st_ctim.tv_sec
+else:
+  proc st_atim*(s: Stat): TimeSpec {.inline.} =
+    ## Nanosecond-granularity time of last access.
+    result.tv_sec = s.st_atime
+  proc st_mtim*(s: Stat): TimeSpec {.inline.} =
+    ## Nanosecond-granularity time of last data modification.
+    result.tv_sec = s.st_mtime
+  proc st_ctim*(s: Stat): TimeSpec {.inline.} =
+    ## Nanosecond-granularity time of last data modification.
+    result.tv_sec = s.st_ctime
 
 when hasAioH:
   proc aio_cancel*(a1: cint, a2: ptr Taiocb): cint {.importc, header: "<aio.h>".}
@@ -973,3 +991,19 @@ template onSignal*(signals: varargs[cint], body: untyped) =
       proc (sig: cint) {.noconv.} =
         body
     )
+
+type
+  RLimit* {.importc: "struct rlimit",
+            header: "<sys/resource.h>", pure, final.} = object
+    rlim_cur*: int
+    rlim_max*: int
+  ## The getrlimit() and setrlimit() system calls get and set resource limits respectively.
+  ## Each resource has an associated soft and hard limit, as defined by the RLimit structure
+
+proc setrlimit*(resource: cint, rlp: var RLimit): cint
+      {.importc: "setrlimit",header: "<sys/resource.h>".}
+  ## The setrlimit() system calls sets resource limits.
+
+proc getrlimit*(resource: cint, rlp: var RLimit): cint
+      {.importc: "getrlimit",header: "<sys/resource.h>".}
+  ## The getrlimit() system call gets resource limits.
diff --git a/lib/posix/posix_linux_amd64.nim b/lib/posix/posix_linux_amd64.nim
index 9e6211b63..4f114d394 100644
--- a/lib/posix/posix_linux_amd64.nim
+++ b/lib/posix/posix_linux_amd64.nim
@@ -351,8 +351,8 @@ type
 
   Timeval* {.importc: "struct timeval", header: "<sys/select.h>",
              final, pure.} = object ## struct timeval
-    tv_sec*: clong       ## Seconds.
-    tv_usec*: clong ## Microseconds.
+    tv_sec*: Time       ## Seconds.
+    tv_usec*: Suseconds ## Microseconds.
   TFdSet* {.importc: "fd_set", header: "<sys/select.h>",
            final, pure.} = object
     abi: array[1024 div (8 * sizeof(clong)), clong]
diff --git a/lib/posix/posix_linux_amd64_consts.nim b/lib/posix/posix_linux_amd64_consts.nim
index 4b693960e..ee4fac1e8 100644
--- a/lib/posix/posix_linux_amd64_consts.nim
+++ b/lib/posix/posix_linux_amd64_consts.nim
@@ -433,6 +433,9 @@ const POSIX_MADV_WILLNEED* = cint(3)
 const POSIX_MADV_DONTNEED* = cint(4)
 const MAP_POPULATE* = cint(32768)
 
+# <sys/resource.h>
+const RLIMIT_NOFILE* = cint(7)
+
 # <sys/select.h>
 const FD_SETSIZE* = cint(1024)
 
diff --git a/lib/posix/posix_other.nim b/lib/posix/posix_other.nim
index 01bc1c1e5..b7570bd15 100644
--- a/lib/posix/posix_other.nim
+++ b/lib/posix/posix_other.nim
@@ -7,7 +7,7 @@
 #    distribution, for details about the copyright.
 #
 
-{.deadCodeElim:on.}
+{.deadCodeElim: on.}  # dce option deprecated
 
 const
   hasSpawnH = not defined(haiku) # should exist for every Posix system nowadays
@@ -215,14 +215,14 @@ type
                           ## For a typed memory object, the length in bytes.
                           ## For other file types, the use of this field is
                           ## unspecified.
-    when defined(macosx) or defined(android):
-      st_atime*: Time     ## Time of last access.
-      st_mtime*: Time     ## Time of last data modification.
-      st_ctime*: Time     ## Time of last status change.
-    else:
+    when StatHasNanoseconds:
       st_atim*: Timespec  ## Time of last access.
       st_mtim*: Timespec  ## Time of last data modification.
       st_ctim*: Timespec  ## Time of last status change.
+    else:
+      st_atime*: Time     ## Time of last access.
+      st_mtime*: Time     ## Time of last data modification.
+      st_ctime*: Time     ## Time of last status change.
     st_blksize*: Blksize  ## A file system-specific preferred I/O block size
                           ## for this object. In some file system types, this
                           ## may vary from file to file.
@@ -335,8 +335,8 @@ type
 
   Timeval* {.importc: "struct timeval", header: "<sys/select.h>",
              final, pure.} = object ## struct timeval
-    tv_sec*: int       ## Seconds.
-    tv_usec*: int ## Microseconds.
+    tv_sec*: Time ## Seconds.
+    tv_usec*: Suseconds ## Microseconds.
   TFdSet* {.importc: "fd_set", header: "<sys/select.h>",
            final, pure.} = object
   Mcontext* {.importc: "mcontext_t", header: "<ucontext.h>",
diff --git a/lib/posix/posix_other_consts.nim b/lib/posix/posix_other_consts.nim
index 003414a6a..1b27fc5f6 100644
--- a/lib/posix/posix_other_consts.nim
+++ b/lib/posix/posix_other_consts.nim
@@ -451,6 +451,9 @@ var POSIX_TYPED_MEM_ALLOCATE* {.importc: "POSIX_TYPED_MEM_ALLOCATE", header: "<s
 var POSIX_TYPED_MEM_ALLOCATE_CONTIG* {.importc: "POSIX_TYPED_MEM_ALLOCATE_CONTIG", header: "<sys/mman.h>".}: cint
 var POSIX_TYPED_MEM_MAP_ALLOCATABLE* {.importc: "POSIX_TYPED_MEM_MAP_ALLOCATABLE", header: "<sys/mman.h>".}: cint
 
+# <sys/resource.h>
+var RLIMIT_NOFILE* {.importc: "RLIMIT_NOFILE", header: "<sys/resource.h>".}: cint
+
 # <sys/select.h>
 var FD_SETSIZE* {.importc: "FD_SETSIZE", header: "<sys/select.h>".}: cint
 
diff --git a/lib/posix/termios.nim b/lib/posix/termios.nim
index f86e408fb..60d540107 100644
--- a/lib/posix/termios.nim
+++ b/lib/posix/termios.nim
@@ -7,7 +7,7 @@
 #    distribution, for details about the copyright.
 #
 
-{.deadCodeElim: on.}
+{.deadCodeElim: on.}  # dce option deprecated
 import posix
 
 type