Class: Posix
- Inherits:
-
Object
- Object
- Posix
- Defined in:
- lib/posix/sigset.rb,
ext/posix/posix.c
Defined Under Namespace
Classes: Sigset
Constant Summary collapse
- SIG_BLOCK =
Define constants for sigprocmask
INT2FIX(RB_POSIX_SIG_BLOCK)
- SIG_UNBLOCK =
INT2FIX(RB_POSIX_SIG_UNBLOCK)
- SIG_SETMASK =
INT2FIX(RB_POSIX_SIG_SETMASK)
Class Method Summary collapse
-
.dup(_filedes) ⇒ Object
Method binding for dup.
- .dup2(_filedes, _filedes2) ⇒ Object
-
.execve(_binary, _argv, _envp) ⇒ Object
Export an argv that does sane, reasonable things instead of doing weird shit.
-
.sigprocmask(_how, _set) ⇒ Object
Doesn’t accept a third argument, instead returns the new set.
Class Method Details
.dup(_filedes) ⇒ Object
Method binding for dup
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# File 'ext/posix/posix.c', line 60
VALUE posix_dup(VALUE self, VALUE _filedes) {
int filedes = FIX2INT(_filedes);
return INT2FIX(dup(filedes));
}
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.dup2(_filedes, _filedes2) ⇒ Object
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# File 'ext/posix/posix.c', line 66
VALUE posix_dup2(VALUE self, VALUE _filedes, VALUE _filedes2) {
int filedes = FIX2INT(_filedes);
int filedes2 = FIX2INT(_filedes2);
return INT2FIX(dup2(filedes, filedes2));
}
|
.execve(_binary, _argv, _envp) ⇒ Object
Export an argv that does sane, reasonable things instead of doing weird shit.
Return value is largely irrelevant
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# File 'ext/posix/posix.c', line 78
VALUE posix_execve(VALUE self, VALUE _binary, VALUE _argv, VALUE _envp) {
/* Iterators */
int i;
VALUE akey, keys, envk;
/* Binary to load in the new process */
char* binary = StringValueCStr(_binary);
/* Construct our new process' argv. Onus is on
* the programmer to set ARGV[0] to something
* reasonable. */
char** argv = malloc(sizeof(char*)*RARRAY_LEN(_argv) + 1);
argv[0] = NULL;
for (i = 0; i < RARRAY_LEN(_argv); i++) {
argv[i] = StringValuePtr(RARRAY_PTR(_argv)[i]);
argv[i+1] = NULL; /* Ensure that we're null terminated */
}
/* Construct our environment. Note that this totally ignores the precedent
* set by Process#spawn, Kernel#exec and fiends */
char **envp;
if (RHASH(_envp)->ntbl) {
envp = malloc(sizeof(char**)*RHASH(_envp)->ntbl->num_entries + 1);
keys = rb_hash_keys(_envp);
for (i = 0; i < RARRAY_LEN(keys); i++) {
akey = RARRAY_PTR(keys)[i];
envk = rb_hash_aref(_envp, akey);
asprintf(&envp[i], "%s=%s", StringValuePtr(akey), StringValuePtr(envk));
envp[i+1] = NULL; /* Ensure that we're null terminated */
}
} else {
envp = malloc(sizeof(char**));
envp[0] = NULL;
}
execve(binary, argv, envp);
fprintf(stderr, "Error: %s", strerror(errno));
}
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.sigprocmask(_how, _set) ⇒ Object
Doesn’t accept a third argument, instead returns the new set
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# File 'ext/posix/posix.c', line 33
VALUE posix_sigprocmask(VALUE self, VALUE _how, VALUE _set) {
int how;
sigset_t *set;
sigset_t *oset = NULL; // TODO, storage for returnvalue
how = FIX2INT(_how);
if (_set == Qnil) {
set = NULL;
} else {
set = malloc(sizeof(sigset_t));
rb_Sigset2sigset_t(_set, set);
}
if (sigprocmask(how, set, oset) == 0) {
// TODO Construct a Sigset and return it so that we can interrogate it
if(set)
free(set);
return Qtrue;
} else {
if(set)
free(set);
rb_raise(rb_eException, "%s", strerror(errno));
}
}
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