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Fixed ln, df, and removed redundant stuff from mtab.

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This commit is contained in:
Eric Andersen
1999-11-06 06:07:27 +00:00
parent bc34190694
commit 29d2e362de
10 changed files with 127 additions and 175 deletions
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54
coreutils/df.c
View File

@@ -38,6 +38,7 @@ static int df(char *device, const char *mountPoint)
struct statfs s;
long blocks_used;
long blocks_percent_used;
struct fstab* fstabItem;
if (statfs(mountPoint, &s) != 0) {
perror(mountPoint);
@@ -48,9 +49,12 @@ static int df(char *device, const char *mountPoint)
blocks_used = s.f_blocks - s.f_bfree;
blocks_percent_used = (long)
(blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
if (strcmp(device, "/dev/root") == 0)
device = (getfsfile("/"))->fs_spec;
/* Note that if /etc/fstab is missing, libc can't fix up /dev/root for us */
if (strcmp (device, "/dev/root") == 0) {
fstabItem = getfsfile ("/");
if (fstabItem != NULL)
device = fstabItem->fs_spec;
}
printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
device,
(long) (s.f_blocks * (s.f_bsize / 1024.0)),
@@ -63,52 +67,14 @@ static int df(char *device, const char *mountPoint)
return 0;
}
/*
* Given a block device, find the mount table entry if that block device
* is mounted.
*
* Given any other file (or directory), find the mount table entry for its
* filesystem.
*/
extern struct mntent *findMountPoint(const char *name, const char *table)
{
struct stat s;
dev_t mountDevice;
FILE *mountTable;
struct mntent *mountEntry;
if (stat(name, &s) != 0)
return 0;
if ((s.st_mode & S_IFMT) == S_IFBLK)
mountDevice = s.st_rdev;
else
mountDevice = s.st_dev;
if ((mountTable = setmntent(table, "r")) == 0)
return 0;
while ((mountEntry = getmntent(mountTable)) != 0) {
if (strcmp(name, mountEntry->mnt_dir) == 0
|| strcmp(name, mountEntry->mnt_fsname) == 0) /* String match. */
break;
if (stat(mountEntry->mnt_fsname, &s) == 0 && s.st_rdev == mountDevice) /* Match the device. */
break;
if (stat(mountEntry->mnt_dir, &s) == 0 && s.st_dev == mountDevice) /* Match the directory's mount point. */
break;
}
endmntent(mountTable);
return mountEntry;
}
extern int df_main(int argc, char **argv)
{
printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
"1k-blocks", "Used", "Available", "Use%", "Mounted on");
/* Only compiled in if BB_MTAB is not defined */
whine_if_fstab_is_missing();
if (argc > 1) {
struct mntent *mountEntry;
int status;

33
coreutils/ln.c
View File

@@ -27,23 +27,21 @@
#include <errno.h>
static const char ln_usage[] = "ln [-s] [-f] original-name additional-name\n"
"\n"
"\tAdd a new name that refers to the same file as \"original-name\"\n"
"\n"
"\t-s:\tUse a \"symbolic\" link, instead of a \"hard\" link.\n"
"\t-f:\tRemove existing destination files.\n";
static const char ln_usage[] = "ln [OPTION] TARGET... LINK_NAME|DIRECTORY\n"
"Create a link named LINK_NAME or DIRECTORY to the specified TARGET\n"
"\nOptions:\n"
"\t-s\tmake symbolic links instead of hard links\n"
"\t-f\tremove existing destination files\n";
static int symlinkFlag = FALSE;
static int removeoldFlag = FALSE;
static const char *destName;
extern int ln_main(int argc, char **argv)
{
int status;
char newdestName[NAME_MAX];
static char* linkName;
if (argc < 3) {
usage (ln_usage);
@@ -69,30 +67,27 @@ extern int ln_main(int argc, char **argv)
}
destName = argv[argc - 1];
linkName = argv[argc - 1];
if ((argc > 3) && !(isDirectory(destName))) {
fprintf(stderr, "%s: not a directory\n", destName);
if ((argc > 3) && !(isDirectory(linkName))) {
fprintf(stderr, "%s: not a directory\n", linkName);
exit (FALSE);
}
while (argc-- >= 2) {
strcpy(newdestName, destName);
strcat(newdestName, (*argv)+(strlen(*(++argv))));
if (removeoldFlag==TRUE ) {
status = ( unlink(newdestName) && errno != ENOENT );
status = ( unlink(linkName) && errno != ENOENT );
if ( status != 0 ) {
perror(newdestName);
perror(linkName);
exit( FALSE);
}
}
if ( symlinkFlag==TRUE)
status = symlink(*argv, newdestName);
status = symlink(*argv, linkName);
else
status = link(*argv, newdestName);
status = link(*argv, linkName);
if ( status != 0 ) {
perror(newdestName);
perror(linkName);
exit( FALSE);
}
}