diff options
Diffstat (limited to 'usr.bin/tn3270/distribution/utilities/srccmd/tar/tarread.c')
| -rw-r--r-- | usr.bin/tn3270/distribution/utilities/srccmd/tar/tarread.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/usr.bin/tn3270/distribution/utilities/srccmd/tar/tarread.c b/usr.bin/tn3270/distribution/utilities/srccmd/tar/tarread.c new file mode 100644 index 0000000..fedeb69 --- /dev/null +++ b/usr.bin/tn3270/distribution/utilities/srccmd/tar/tarread.c @@ -0,0 +1,208 @@ +/* tarread.c */ +/* Copyright (c) 1985, by Carnegie-Mellon University */ + +#include <stdio.h> +#include <v2tov3.h> +#include <sys\types.h> +#include <sys\stat.h> +#include "tar.h" + +char usage[] = "tarread: usage: tarread tx[vwz] tarfile\n"; +union hblock hbuf; + +int verbose = 0; +int confirm = 0; +int binary = 0; +char cmd; + +main(argc, argv) +int argc; +char *argv[]; +{ + FILE *fp; + char *cp; + + if (argc != 3) { + fprintf(stderr, usage); + exit(1); + } + + for (cp = argv[1]; *cp; cp++) + switch (*cp) { + case 't': + case 'x': + cmd = *cp; + break; + + case 'v': + verbose++; + break; + case 'z': + binary++; + break; + case 'w': + confirm++; + break; + default: + fprintf(stderr, "tarread: unknown switch %c\n", *cp); + fprintf(stderr, usage); + exit(1); + } + + if ((fp = fopen(argv[2], "rb")) == NULL) { + fprintf(stderr, "tarrread: cannot open %s\n", argv[2]); + exit(1); + } + + for (;;) { + if (fread(&hbuf, sizeof(hbuf), 1, fp) != 1) { + perror("fread"); + exit(1); + } + if (!proc_file(fp)) + break; + } +} + + +int proc_file(fp) +FILE *fp; +{ + char name[NAMSIZ]; + unsigned short mode; + short uid, gid; + long size, mtime; + char c; + int confrmd; + long skip; + + if (hbuf.dbuf.name[0] == '\0') + return (NULL); + + strcpy(name, hbuf.dbuf.name); + if (sscanf(hbuf.dbuf.mode, "%o", &mode) != 1) + fprintf("Couldn't read mode\n"); + if (sscanf(hbuf.dbuf.uid, "%o", &uid) != 1) + fprintf("Couldn't read uid\n"); + if (sscanf(hbuf.dbuf.gid, "%o", &gid) != 1) + fprintf("Couldn't read gid\n"); + if (sscanf(hbuf.dbuf.size, "%12lo %12lo", &size, &mtime) != 2) + fprintf("Couldn't read size or mtime\n"); + + skip = (size + TBLOCK - 1) / TBLOCK * TBLOCK; + + switch (cmd) { + case 't': + if (verbose) + printf("%8o %d/%d\t %6ld %.24s %s\n", mode, + uid, gid, size, ctime(&mtime), name); + else + printf("%s\n", name); + + break; + + case 'x': + if (verbose) + printf("x %s: ", name); + confrmd = 1; + + if (confirm) { + confrmd = 0; + if ((c = getchar()) == 'y') + confrmd++; + while (c != '\n') + c = getchar(); + if(!confrmd) + break; + } + + if(extract(name, size, mode, mtime, fp)) + skip = 0; + + if (verbose) + printf("\n"); + break; + } + if (fseek(fp, skip, 1)) { + perror("fseek"); + exit(1); + } + return (1); +} + + +int extract(fname, size, mode, mtime, ifp) +char *fname; +long size; +unsigned short mode; +long mtime; +FILE *ifp; +{ + FILE *ofp; + char fbuf[TBLOCK]; + long copied, left; + char *s, *np, *strchr(); + struct stat sbuf; + + for(np = fname; s = strchr(np, '/'); np = s+1) { + *s = '\0'; + if(stat(fname, &sbuf)) { + if(mkdir(fname)) + perror("mkdir"); + } else if(!(sbuf.st_mode & S_IFDIR)) { + fprintf(stderr, "\n%s: Not a directory", fname); + *s = '/'; + fprintf(stderr, "\ntar: %s - cannot create", fname); + return (0); + } + *s = '/'; + } + if(!*np) + return (0); + + if (binary) { + if ((ofp = fopen(fname, "wb")) == NULL) { + perror("extract:"); + return (0); + } + } else { + if ((ofp = fopen(fname, "w")) == NULL) { + perror("extract:"); + return (0); + } + } + + for(copied = 0; copied < size; copied += TBLOCK) { + if(fread(fbuf, TBLOCK, 1, ifp) != 1) { + perror("fread"); + exit(1); + } + left = size - copied; + if(fwrite(fbuf, (int)min(left, TBLOCK), 1, ofp) != 1) { + perror("fwrite"); + exit(1); + } + } + + if(fclose(ofp)) { + perror("fclose"); + exit(1); + } + + /* + * Now, set modification time. + */ + { +#include <sys\utime.h> + struct utimbuf utim; + + utim.modtime = mtime; + + if (utime(fname, &utim) == -1) { + perror("utime"); + exit(1); + } + } + + return (1); +} |
