diff options
Diffstat (limited to 'missing/mkdir.c')
-rw-r--r-- | missing/mkdir.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/missing/mkdir.c b/missing/mkdir.c new file mode 100644 index 0000000000..ed1476db9a --- /dev/null +++ b/missing/mkdir.c @@ -0,0 +1,104 @@ +/* + * Written by Robert Rother, Mariah Corporation, August 1985. + * + * If you want it, it's yours. All I ask in return is that if you + * figure out how to do this in a Bourne Shell script you send me + * a copy. + * sdcsvax!rmr or rmr@uscd + * + * Severely hacked over by John Gilmore to make a 4.2BSD compatible + * subroutine. 11Mar86; hoptoad!gnu + * + * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir, + * subroutine didn't return EEXIST. It does now. + */ + +#include <sys/stat.h> +#include <errno.h> +/* + * Make a directory. + */ +int +mkdir (dpath, dmode) + char *dpath; + int dmode; +{ + int cpid, status; + struct stat statbuf; + + if (stat (dpath, &statbuf) == 0) + { + errno = EEXIST; /* Stat worked, so it already exists */ + return -1; + } + + /* If stat fails for a reason other than non-existence, return error */ + if (errno != ENOENT) + return -1; + + switch (cpid = fork ()) + { + + case -1: /* Error in fork() */ + return (-1); /* Errno is set already */ + + case 0: /* Child process */ + /* + * Cheap hack to set mode of new directory. Since this + * child process is going away anyway, we zap its umask. + * FIXME, this won't suffice to set SUID, SGID, etc. on this + * directory. Does anybody care? + */ + status = umask (0); /* Get current umask */ + status = umask (status | (0777 & ~dmode)); /* Set for mkdir */ + execl ("/bin/mkdir", "mkdir", dpath, (char *) 0); + _exit (-1); /* Can't exec /bin/mkdir */ + + default: /* Parent process */ + while (cpid != wait (&status)); /* Wait for kid to finish */ + } + + if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0) + { + errno = EIO; /* We don't know why, but */ + return -1; /* /bin/mkdir failed */ + } + + return 0; +} + +int +rmdir (dpath) + char *dpath; +{ + int cpid, status; + struct stat statbuf; + + if (stat (dpath, &statbuf) != 0) + { + /* Stat just set errno. We don't have to */ + return -1; + } + + switch (cpid = fork ()) + { + + case -1: /* Error in fork() */ + return (-1); /* Errno is set already */ + + case 0: /* Child process */ + execl ("/bin/rmdir", "rmdir", dpath, (char *) 0); + _exit (-1); /* Can't exec /bin/mkdir */ + + default: /* Parent process */ + while (cpid != wait (&status)); /* Wait for kid to finish */ + } + + if (WIFSIGNALED (status) || WEXITSTATUS (status) != 0) + { + errno = EIO; /* We don't know why, but */ + return -1; /* /bin/rmdir failed */ + } + + return 0; +} |