Commit Graph

71 Commits

Author SHA1 Message Date
Pavel Pisa
380198c985 symtab/, tools/: NuttX provides lists of available syscalls and library functions and tools to process them. The lists can be used to build symbol table which allows runtime program loading which can reuse functions already compiled into NuttX system image. List processing, compilation and linking to the final system image has been possible only under manual control until now.
Provided changes add option (CONFIG_EXECFUNCS_GENERATE_SYSTEM_SYMTAB) to build complete list of available functions and syscalls automatically.  The symbolic table is generated in form libsymtab.a which can be reused by application or directly pull in when "g_symtab" and "g_nsymbols" variables are requested by EXECFUNCS configuration.

I have tried to follow mechanisms for library compilation in different kernel protection modes but tested only flat no-MMU build. The basic assumption is that this library and libraries providing syscall stubs and C-library functions are available in user-space context and initial application (usually NSH) registers the symbol table through IOCTL.  The table can be reused then by another applications in their address space as kernel allows. Simple for flat or protected mode, I am not sure if really support in MMU mode. It is highly probable that I have made some mistake, overlooked something, but functionality is optional (should not cause troubles in any mode if disabled) and main purpose is to lower memory overhead when more applications are loaded on memory constrained system which usually use direct kernel calling without protection or address space separation. If the table should be provided by kernel to applications then makefiles has to be adjusted.
2019-08-13 09:09:43 -06:00
Gregory Nutt
e6da85deb3 sched/group/group_setuid.c and group_setguid.c: Verify that the UID/GID is within range. 2019-08-10 10:42:53 -06:00
Gregory Nutt
ec5120f69e sched/group and syscall/: Implement 'real' setuid, getuid, setgid, and getgid interfaces. These will be inheritance by all child task groups. 2019-08-06 14:13:43 -06:00
Gregory Nutt
945e27d85c libs/libc/unistd.h: Add getuid() and getgid() to match Michael Jung's setuid() and setgid(). 2019-08-06 12:38:43 -06:00
Michael Jung
e8af615578 libs/libc/unistd: Stubs for setuid and setgid. Added stubbed implementations of setuid and setgid. These functions are essentially stubs pretending that NuttX supported users and groups and that the only configured user and group in the system were both 'root' with a uid and a gid of 0, respectively. The intent is not to provide meaningful new features, but to ease porting of foreign source code to NuttX. 2019-08-06 07:17:23 -06:00
Gregory Nutt
abf6965c24 Squashed commit of the following:
libs/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    syscall/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    wireless/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    Documentation/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    include/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    drivers/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    sched/:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    configs:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/xtensa:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/z80:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/x86:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/renesas and arch/risc-v:  Remove references to CONFIG_DISABLE_SIGNALS.  Signals can no longer be disabled.
    arch/or1k:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/misoc:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/mips:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/avr:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
    arch/arm:  Remove all references to CONFIG_DISABLE_SIGNALS.  Signals are always enabled.
2019-04-29 14:52:05 -06:00
Gregory Nutt
a64869aa67 CONFIG_NFILE_DESCRIPTORS=0 can no longer be used to disable the file system. NuttX with no file system does not make sense.
Squashed commit of the following:

    configs/:  The few configurations that formerly set CONFIG_NFILE_DESCRIPTORS=0 should not default, rather they should set the number of descriptors to 3.
    fs/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    tools/:  Tools updates for changes to usage of CONFIG_NFILE_DESCRIPTORS.
    syscall/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    libs/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    include/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    drivers/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    Documentation/:  Remove all references to CONFIG_NFILE_DESCRIPTORS == 0
    binfmt/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    arch/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    net/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    sched/:  Remove all conditional logic based on CONFIG_NFILE_DESCRIPTORS == 0
    sched/Kconfig:  CONFIG_NFILE_DESCRIPTORS may no longer to set to a value less than 3
    configs/:  Remove all settings for CONFIG_NFILE_DESCRIPTORS < 3
2019-02-11 12:09:26 -06:00
Xiang Xiao
659852acd5 libs/libc/unistd/lib_getopt.c: Add logic to reinitialize the stale context for the FLAT/PROTECTED builds. In these builds getopt() global varriables may be shared by many tasks. If any task exits the getopt() loop before all command line arguments have been parsed, then getopt() global variables will be left in a bad state. The next time getopt() is called, this logic should detect the bad state and force the state of getopt() to be re-initialized so that it can be reused. This logic is not full proof (it would fail, for example, if you tried to parse the same command line twice) but should catch the typical misuse cases. 2019-02-05 10:30:59 -06:00
Xiang Xiao
16850297f3 libs/unistd and other affected files: Hostname support no longer depends on CONFIG_NET since the host name is also useful in the non-network environment. CONFIG_NET_HOSTNAME changed to CONFIG_LIB_HOSTNAME. 2019-01-27 06:56:16 -06:00
David Sidrane
5433ec589b fs/driver/fs_blockpartition.c: Fix void pointer warning.
libs/libc/unistd/lib_daemon.c:  Fix compiler error is streams disabled.
sched/irq/irq_procfs.c:  Fix warning
sched/task/task_vfork.c: Fix void * math warning
2018-12-03 17:54:21 -06:00
nchao
6509a0c0ca binfmt/ and libs/libc: Make exepath_*() more common:
1. Move exepath_*() related code to libc/misc
  1. Rename exepath_ to envpath_
  2. Rename BINFMT_EXEPATH to LIB_ENVPATH

libs/libc/modlib:  Add pre module library symbol table support
2018-11-08 07:27:14 -06:00
Gregory Nutt
8c61c2f31b Remove trailing spaces at the end of lines. 2018-08-13 07:39:38 -06:00
Gregory Nutt
17c18a1347 tools/kconfig2html.c: Update tool to handle tristate types. Fix a few errors detected in Kconfig files. 2018-08-10 17:30:17 -06:00
Gregory Nutt
b75103e264 Update some comments. 2018-07-22 05:56:11 -06:00
Gregory Nutt
4e92314d96 Update some comments 2018-07-20 09:36:22 -06:00
Gregory Nutt
5a89459783 libs/libc/unistd/: Add a crippled version of daemon(). 2018-07-20 07:56:09 -06:00
Gregory Nutt
4c67062457 Squashed commit of the following:
binfmt/, libs/libc/unistd, and others:  Rename CONFIG_EXECFUNCS_SYMTAB to CONFIG_EXECFUNCS_SYMTAB_ARRAY.  Rename CONFIG_EXECFUNCS_NSYMBOLS to CONFIG_EXECFUNCS_NSYMBOLS_VAR.  Unlike CONFIG_EXECFUNCS_NSYMBOLS, CONFIG_EXECFUNCS_NSYMBOLS_VAR holds the name of an 'int' variable that contains the number of symbols in the symbol table.

    configs/sama5d4-ek:  Partial update to knsh build instructions.
2018-07-15 11:20:37 -06:00
Gregory Nutt
903a4d866a libs/libc/unistd/Kconfig: Revisiting 664af2a69b, the problem was not that the default should be 'not set', the problem is that the conditionals were backward. 2018-07-14 10:34:55 -06:00
Gregory Nutt
29474a2b08 Trivial update to some comments and debug statement formats. 2018-07-14 07:11:25 -06:00
Gregory Nutt
664af2a69b Default for CONFIG_EXECFUNCS_HAVE_SYMTAB should be 'not set' 2018-07-13 14:56:45 -06:00
Gregory Nutt
cf99fb40c9 This commit moves all of the libraries under a common directory called libs/. This most certainly break libcxx and uClibc++ for now.
Squashed commit of the following:

    libs/libxx:  Fix some confusing in naming.  If the directory is called libxx, then the library must be libxx.a (unless perhaps LIBCXX is selected).
    libs/:  Fix paths in moved library directories.
    libs:  Brute force move of libc, libnx, and libxx to libs.  Cannot yet build it in that configuration.
2018-05-29 13:21:26 -06:00