SO lista0 lista1

6 files changed, 317 insertions, 0 deletions

diff --git a/semestr-5/so/lista0/lista_0/1_ls.c b/semestr-5/so/lista0/lista_0/1_ls.c
new file mode 100644
index 0000000..ffbbc54
--- /dev/null
+++ b/semestr-5/so/lista0/lista_0/1_ls.c
@@ -0,0 +1,18 @@
+#include "apue.h"
+#include <dirent.h>
+
+int main(int argc, char *argv[]) {
+  DIR *dp;
+  struct dirent *dirp;
+
+  if (argc != 2)
+    err_quit("usage: ls directory_name");
+
+  if ((dp = opendir(argv[1])) == NULL)
+    err_sys("can't open %s", argv[1]);
+  while ((dirp = readdir(dp)) != NULL)
+    printf("%s\n", dirp->d_name);
+
+  closedir(dp);
+  exit(0);
+}
diff --git a/semestr-5/so/lista0/lista_0/2_cat.c b/semestr-5/so/lista0/lista_0/2_cat.c
new file mode 100644
index 0000000..45f4106
--- /dev/null
+++ b/semestr-5/so/lista0/lista_0/2_cat.c
@@ -0,0 +1,26 @@
+#include "apue.h"
+#include <stdio.h>
+#include <fcntl.h>
+
+#define BUFFSIZE 4096
+
+int main(int argc, char **argv) {
+  int n;
+  char buf[BUFFSIZE];
+
+  if (argc != 2) {
+    printf("Usage: %s <file to output>", argv[0]);
+    exit(1);
+  }
+
+  int fd = open(argv[1], O_RDONLY);
+
+  while ((n = read(fd, buf, BUFFSIZE)) > 0)
+    if (write(STDOUT_FILENO, buf, n) != n)
+      err_sys("write error");
+
+  if (n < 0)
+    err_sys("read error");
+
+  exit(0);
+}
diff --git a/semestr-5/so/lista0/lista_0/3_cat.c b/semestr-5/so/lista0/lista_0/3_cat.c
new file mode 100644
index 0000000..45f4106
--- /dev/null
+++ b/semestr-5/so/lista0/lista_0/3_cat.c
@@ -0,0 +1,26 @@
+#include "apue.h"
+#include <stdio.h>
+#include <fcntl.h>
+
+#define BUFFSIZE 4096
+
+int main(int argc, char **argv) {
+  int n;
+  char buf[BUFFSIZE];
+
+  if (argc != 2) {
+    printf("Usage: %s <file to output>", argv[0]);
+    exit(1);
+  }
+
+  int fd = open(argv[1], O_RDONLY);
+
+  while ((n = read(fd, buf, BUFFSIZE)) > 0)
+    if (write(STDOUT_FILENO, buf, n) != n)
+      err_sys("write error");
+
+  if (n < 0)
+    err_sys("read error");
+
+  exit(0);
+}
diff --git a/semestr-5/so/lista0/lista_0/include/apue.h b/semestr-5/so/lista0/lista_0/include/apue.h
new file mode 100644
index 0000000..ac6ca33
--- /dev/null
+++ b/semestr-5/so/lista0/lista_0/include/apue.h
@@ -0,0 +1,134 @@
+/*
+ * Our own header, to be included before all standard system headers.
+ */
+#ifndef _APUE_H
+#define _APUE_H
+
+#define _POSIX_C_SOURCE 200809L
+
+#if defined(SOLARIS) /* Solaris 10 */
+#define _XOPEN_SOURCE 600
+#else
+#define _XOPEN_SOURCE 700
+#endif
+
+#include <sys/stat.h>
+#include <sys/types.h> /* some systems still require this */
+#include <termios.h>   /* for winsize */
+#if defined(MACOS) || !defined(TIOCGWINSZ)
+#include <sys/ioctl.h>
+#endif
+#if defined(LINUX)
+#include <sys/sysmacros.h>
+#endif
+
+#include <signal.h> /* for SIG_ERR */
+#include <stddef.h> /* for offsetof */
+#include <stdio.h>  /* for convenience */
+#include <stdlib.h> /* for convenience */
+#include <string.h> /* for convenience */
+#include <unistd.h> /* for convenience */
+
+#define MAXLINE 4096 /* max line length */
+
+/*
+ * Default file access permissions for new files.
+ */
+#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)
+
+/*
+ * Default permissions for new directories.
+ */
+#define DIR_MODE (FILE_MODE | S_IXUSR | S_IXGRP | S_IXOTH)
+
+typedef void Sigfunc(int); /* for signal handlers */
+
+#define min(a, b) ((a) < (b) ? (a) : (b))
+#define max(a, b) ((a) > (b) ? (a) : (b))
+
+/*
+ * Prototypes for our own functions.
+ */
+char *path_alloc(size_t *); /* {Prog pathalloc} */
+long open_max(void);        /* {Prog openmax} */
+
+int set_cloexec(int); /* {Prog setfd} */
+void clr_fl(int, int);
+void set_fl(int, int); /* {Prog setfl} */
+
+void pr_exit(int); /* {Prog prexit} */
+
+void pr_mask(const char *);           /* {Prog prmask} */
+Sigfunc *signal_intr(int, Sigfunc *); /* {Prog signal_intr_function} */
+
+void daemonize(const char *); /* {Prog daemoninit} */
+
+void sleep_us(unsigned int);               /* {Ex sleepus} */
+ssize_t readn(int, void *, size_t);        /* {Prog readn_writen} */
+ssize_t writen(int, const void *, size_t); /* {Prog readn_writen} */
+
+int fd_pipe(int *); /* {Prog sock_fdpipe} */
+int recv_fd(int, ssize_t (*func)(int, const void *,
+                                 size_t));       /* {Prog recvfd_sockets} */
+int send_fd(int, int);                           /* {Prog sendfd_sockets} */
+int send_err(int, int, const char *);            /* {Prog senderr} */
+int serv_listen(const char *);                   /* {Prog servlisten_sockets} */
+int serv_accept(int, uid_t *);                   /* {Prog servaccept_sockets} */
+int cli_conn(const char *);                      /* {Prog cliconn_sockets} */
+int buf_args(char *, int (*func)(int, char **)); /* {Prog bufargs} */
+
+int tty_cbreak(int);               /* {Prog raw} */
+int tty_raw(int);                  /* {Prog raw} */
+int tty_reset(int);                /* {Prog raw} */
+void tty_atexit(void);             /* {Prog raw} */
+struct termios *tty_termios(void); /* {Prog raw} */
+
+int ptym_open(char *, int); /* {Prog ptyopen} */
+int ptys_open(char *);      /* {Prog ptyopen} */
+#ifdef TIOCGWINSZ
+pid_t pty_fork(int *, char *, int, const struct termios *,
+               const struct winsize *); /* {Prog ptyfork} */
+#endif
+
+int lock_reg(int, int, int, off_t, int, off_t); /* {Prog lockreg} */
+
+#define read_lock(fd, offset, whence, len)                                     \
+  lock_reg((fd), F_SETLK, F_RDLCK, (offset), (whence), (len))
+#define readw_lock(fd, offset, whence, len)                                    \
+  lock_reg((fd), F_SETLKW, F_RDLCK, (offset), (whence), (len))
+#define write_lock(fd, offset, whence, len)                                    \
+  lock_reg((fd), F_SETLK, F_WRLCK, (offset), (whence), (len))
+#define writew_lock(fd, offset, whence, len)                                   \
+  lock_reg((fd), F_SETLKW, F_WRLCK, (offset), (whence), (len))
+#define un_lock(fd, offset, whence, len)                                       \
+  lock_reg((fd), F_SETLK, F_UNLCK, (offset), (whence), (len))
+
+pid_t lock_test(int, int, off_t, int, off_t); /* {Prog locktest} */
+
+#define is_read_lockable(fd, offset, whence, len)                              \
+  (lock_test((fd), F_RDLCK, (offset), (whence), (len)) == 0)
+#define is_write_lockable(fd, offset, whence, len)                             \
+  (lock_test((fd), F_WRLCK, (offset), (whence), (len)) == 0)
+
+void err_msg(const char *, ...); /* {App misc_source} */
+void err_dump(const char *, ...) __attribute__((noreturn));
+void err_quit(const char *, ...) __attribute__((noreturn));
+void err_cont(int, const char *, ...);
+void err_exit(int, const char *, ...) __attribute__((noreturn));
+void err_ret(const char *, ...);
+void err_sys(const char *, ...) __attribute__((noreturn));
+
+void log_msg(const char *, ...); /* {App misc_source} */
+void log_open(const char *, int, int);
+void log_quit(const char *, ...) __attribute__((noreturn));
+void log_ret(const char *, ...);
+void log_sys(const char *, ...) __attribute__((noreturn));
+void log_exit(int, const char *, ...) __attribute__((noreturn));
+
+void TELL_WAIT(void); /* parent/child from {Sec race_conditions} */
+void TELL_PARENT(pid_t);
+void TELL_CHILD(pid_t);
+void WAIT_PARENT(void);
+void WAIT_CHILD(void);
+
+#endif /* _APUE_H */
diff --git a/semestr-5/so/lista0/lista_0/libapue/error.c b/semestr-5/so/lista0/lista_0/libapue/error.c
new file mode 100644
index 0000000..cb9060f
--- /dev/null
+++ b/semestr-5/so/lista0/lista_0/libapue/error.c
@@ -0,0 +1,113 @@
+#include "apue.h"
+#include <errno.h>  /* for definition of errno */
+#include <stdarg.h> /* ISO C variable aruments */
+
+static void err_doit(int, int, const char *, va_list);
+
+/*
+ * Nonfatal error related to a system call.
+ * Print a message and return.
+ */
+void err_ret(const char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  err_doit(1, errno, fmt, ap);
+  va_end(ap);
+}
+
+/*
+ * Fatal error related to a system call.
+ * Print a message and terminate.
+ */
+void err_sys(const char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  err_doit(1, errno, fmt, ap);
+  va_end(ap);
+  exit(1);
+}
+
+/*
+ * Nonfatal error unrelated to a system call.
+ * Error code passed as explict parameter.
+ * Print a message and return.
+ */
+void err_cont(int error, const char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  err_doit(1, error, fmt, ap);
+  va_end(ap);
+}
+
+/*
+ * Fatal error unrelated to a system call.
+ * Error code passed as explict parameter.
+ * Print a message and terminate.
+ */
+void err_exit(int error, const char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  err_doit(1, error, fmt, ap);
+  va_end(ap);
+  exit(1);
+}
+
+/*
+ * Fatal error related to a system call.
+ * Print a message, dump core, and terminate.
+ */
+void err_dump(const char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  err_doit(1, errno, fmt, ap);
+  va_end(ap);
+  abort(); /* dump core and terminate */
+  exit(1); /* shouldn't get here */
+}
+
+/*
+ * Nonfatal error unrelated to a system call.
+ * Print a message and return.
+ */
+void err_msg(const char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  err_doit(0, 0, fmt, ap);
+  va_end(ap);
+}
+
+/*
+ * Fatal error unrelated to a system call.
+ * Print a message and terminate.
+ */
+void err_quit(const char *fmt, ...) {
+  va_list ap;
+
+  va_start(ap, fmt);
+  err_doit(0, 0, fmt, ap);
+  va_end(ap);
+  exit(1);
+}
+
+/*
+ * Print a message and return to caller.
+ * Caller specifies "errnoflag".
+ */
+static void err_doit(int errnoflag, int error, const char *fmt, va_list ap) {
+  char buf[MAXLINE];
+
+  vsnprintf(buf, MAXLINE - 1, fmt, ap);
+  if (errnoflag)
+    snprintf(buf + strlen(buf), MAXLINE - strlen(buf) - 1, ": %s",
+             strerror(error));
+  strcat(buf, "\n");
+  fflush(stdout); /* in case stdout and stderr are the same */
+  fputs(buf, stderr);
+  fflush(NULL); /* flushes all stdio output streams */
+}
diff --git a/semestr-5/so/lista0/lista_0/libapue/libapue.a b/semestr-5/so/lista0/lista_0/libapue/libapue.a
new file mode 100644
index 0000000..3a21f79
--- /dev/null
+++ b/semestr-5/so/lista0/lista_0/libapue/libapue.a