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